Windows 8.1 Hyper-v issue

This happened after I restored my system using restore point ,virtual switch has been deleted.
Now I get these event logs:
A: 'Network Virtualization Service Provider' driver required by the Virtual Machine Management service is not installed or is disabled. Check your settings or try reinstalling the Hyper-V role.
B: The virtual machine bus is not running.
C: The virtualization infrastructure driver (VID) is not running.
I can open Hyper-v manager , and all VMs I created before can be loaded in Hyper-v Manager , but I can't open virtual switch manager . Can anyone help me ? Appreciate

Did you do what the error suggested? Remove and re-add the Hyper-V Role?
Mike Crowley | MVP
My Blog --
Baseline Technologies

Similar Messages

Windows Server 2012 Hyper-V network latencies

Hi All,
I have an issue with our Windows Server 2012 Hyper-V hosts that I can't seem to figure out. Situation:
2 x Dell PowerEdge R815 servers with AMD opteron 6376 16 core CPU's and 128 GB RAM running Windows Server 2012 with Hyper-V.
2 virtual machines running on the same physical host and connected to the same virtual switch show high TCP connection latencies. One virtual machines runs a SQL Server 2012 database instance and a Dynamics AX 2012 R2 instance. The other machine a
SharePoint 2013 instance and the AX client. We see latencies of 20ms and higher on most of the TCP connections that are made from the sharepoint machine to the sql server machine.
At first I thought it might have something to do with the physical NIC's. It turned out that VMQ wasn't correctly supported by the firmware of the Broadcom BCM5709c cards. By default this setting is enabled. Turning off the VMQ setting somewhat improved
the situation but the latencies are still at 8ms and higher.
What I don't understand is what influence enabling/disabling VMQ should have on network performance. As I understand it now virtual machines connected to the same virtual switch bypass the physical altogether. Another point is that VMQ should actually improve
performance, not decrease it.
Another question I have is about the various tcp offloading settings on the physical NIC's. After installing the new firmware and drivers from Dell most of these settings are set to disabled. The documents I have been able to find talk about Windows Server
2008, any thought how these settings relate to Windows Server 2012 and whether they should be enabled?
Thanks in advance for your time and thoughts
Kind regards,
Dennes Schuitema

Hi Denes,
Please try to update your BroadCom NIC driver version ,the newest version should be 7.8.51
For details please refer to following link :
http://www.broadcom.com/support/ethernet_nic/netxtremeii.php
Best Regards
Elton Ji
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Windows 2008 r2 guests blue screen on Windows 2012 R2 Hyper-V Cluster with e5 2670-v2 processors

Hello all,
We have a new hyper-v infrastructure deployed in two brand new Dell R720 Servers with 384GB of Memory and dual Intel e5 2670-v2 processors. This infrastructure is replacing an existing hyper-v 2008 R2 and all the guests are being migrated to this new cluster.
The issue we are seeing is our 2008 r2 guests blue screening ocasionally with 0x0000001a,0x0000004e or 0x00000050 bugchecks.
All this guests are configured with dynamic memory and with the integration components up to date. These same guests were running with no problems in the hyper-v 2008r2 cluster.
When searching i found this article from vmware that pretty much describes what we are facing:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2073791
Are you aware of the same problem with this kindd of hardware on windows 2012 r2 hyper-v?
Thanks!
Nuno Carvalho

Meanwhile i found this May 2014 update on the intel specification of the CPU we are using:
CA135 Incorrect Page Translation when EPT is enabled
Problem:
If EPT (Extended Page Tables) is enabled, then a complex sequence of internal processor events may result in unexpected page faults or use of incorrect page translations.
Implication:
Due to this erratum a guest may crash or experience unpredictable system behavior.
Workaround:
It is possible for the BIOS to contain a workaround for this erratum.
Status:
For the affected steppings, see the
Summary Tables of Changes.
This affects VMware as of the today update of the article i referenced in the first post, what about hyper-v?
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e5-v2-spec-update.pdf
Nuno Carvalho

Windows Server 2012 - Hyper-V - Cluster Sharded Storage - VHDX unexpectedly gets copied to System Volume Information by "System", Virtual Machines stops respondig

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN.
Our setup:
Hosts - Both run Windows Server 2012 Standard and are clustered.
HP ProLiant G7, 24 GB RAM. This is the primary host and normaly all VMs run on this host.
HP ProLiant G5, 20 GB RAM. This is the secondary host that and is intended to be used in case of failure of the primary host.
We have no antivirus on the hosts and the scheduled ShadowCopy (previous version of files) is switched off.
iSCSI SAN:
QNAP NAS TS-869 Pro, 8 INTEL SSDSA2CW160G3 160 GB i a RAID 5 with a Host Spare. 2 Teamed NIC.
Switch:
DLINK DGS-1210-16 - Both the network cards of the Hosts that are dedicated to the Storage and the Storage itself are connected to the same switch and nothing else is connected to this switch.
Virtual Machines:
3 Windows Server 2012 Standard - 1 DC, 1 FileServer, 1 Application Server.
1 Windows Server 2008 Standard Exchange Server.
All VMs are using dynamic disks (as recommended by Microsoft).
Updates
We have applied the most resent updates to the Hosts, VMs and iSCSI SAN about 3 weeks ago with no change in our problem and we continually update the setup.
Normal operation:
Normally this setup works just fine and we see no real difference in speed in startup, file copy and processing speed in LoB applications of this setup compared to a single host with two 10000 RPM Disks. Normal network speed is 10-200 Mbit, but occasionally
we see speeds up to 400 Mbit/s of combined read/write for instance during file repair.
Our Problem:
Our problem is that for some reason a random VHDX gets copied to System Volume Information by "System" of the Clusterd Shared Storage (i.e. C:\ClusterStorage\Volume1\System Volume Information).
All VMs stops responding or responds very slowly during this copy process and you can for instance not send CTRL-ALT-DEL to a VM in the Hyper-V console, or for instance start task manager when already logged in.
This happens at random and not every day and different VHDX files from different VMs gets copied each time. Some time it happens during daytime wich causes a lot of problems, especially when a 200 GB file gets copied (which take a lot of time).
What it is not:
We thought that this was connected to the backup, but the backup had finished 3 hours before the last time this happended and the backup never uses any of the files in System Volume Information so it is not the backup.
An observation:
When this happend today I switched on ShadowCopy (previous files) and set it to only to use 320 MB of storage and then the Copy Process stopped and the virtual Machines started responding again. This could be unrelated since there is no way to see
how much of the VHDX that is left to be copied, so it might have been finished at the same time as I enabled ShadowCopy (previos files).
Our question:
Why is a VHDX copied to System Volume Information when scheduled ShadowCopy (previous version of files) is switched off? As far as I know, nothing should be copied to this folder when this functionis switched off?
List of VSS Writers:
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2012 Microsoft Corp.
Writer name: 'Task Scheduler Writer'
   Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
   Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
   State: [1] Stable
   Last error: No error
Writer name: 'VSS Metadata Store Writer'
   Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
   Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}
   State: [1] Stable
   Last error: No error
Writer name: 'Performance Counters Writer'
   Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2}
   Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381}
   State: [1] Stable
   Last error: No error
Writer name: 'System Writer'
   Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
   Writer Instance Id: {7848396d-00b1-47cd-8ba9-769b7ce402d2}
   State: [1] Stable
   Last error: No error
Writer name: 'Microsoft Hyper-V VSS Writer'
   Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
   Writer Instance Id: {8b6c534a-18dd-4fff-b14e-1d4aebd1db74}
   State: [5] Waiting for completion
   Last error: No error
Writer name: 'Cluster Shared Volume VSS Writer'
   Writer Id: {1072ae1c-e5a7-4ea1-9e4a-6f7964656570}
   Writer Instance Id: {d46c6a69-8b4a-4307-afcf-ca3611c7f680}
   State: [1] Stable
   Last error: No error
Writer name: 'ASR Writer'
   Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
   Writer Instance Id: {fc530484-71db-48c3-af5f-ef398070373e}
   State: [1] Stable
   Last error: No error
Writer name: 'WMI Writer'
   Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
   Writer Instance Id: {3792e26e-c0d0-4901-b799-2e8d9ffe2085}
   State: [1] Stable
   Last error: No error
Writer name: 'Registry Writer'
   Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
   Writer Instance Id: {6ea65f92-e3fd-4a23-9e5f-b23de43bc756}
   State: [1] Stable
   Last error: No error
Writer name: 'BITS Writer'
   Writer Id: {4969d978-be47-48b0-b100-f328f07ac1e0}
   Writer Instance Id: {71dc7876-2089-472c-8fed-4b8862037528}
   State: [1] Stable
   Last error: No error
Writer name: 'Shadow Copy Optimization Writer'
   Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
   Writer Instance Id: {cb0c7fd8-1f5c-41bb-b2cc-82fabbdc466e}
   State: [1] Stable
   Last error: No error
Writer name: 'Cluster Database'
   Writer Id: {41e12264-35d8-479b-8e5c-9b23d1dad37e}
   Writer Instance Id: {23320f7e-f165-409d-8456-5d7d8fbaefed}
   State: [1] Stable
   Last error: No error
Writer name: 'COM+ REGDB Writer'
   Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
   Writer Instance Id: {f23d0208-e569-48b0-ad30-1addb1a044af}
   State: [1] Stable
   Last error: No error
Please note:
Please only answer our question and do not offer any general optimization tips that do not directly adress the issue! We want the problem to go away, not to finish a bit faster!

Hallo Lawrence!
Thankyou for youre reply, some comments to help you and others who read this thread:
First of all, we use Windows Server 2012 and the VHDX as I wrote in the headline and in the text in my post. We have not had this problem in similar setups with Windows Server 2008 R2, so the problem seem to be introduced in Windows Server 2012.
These posts that you refer to seem to be outdated and/or do not apply to our configuration:
The post about Dynamic Disks:
http://technet.microsoft.com/en-us/library/ee941151(v=WS.10).aspx is only a recommendation for Windows Server 2008 R2 and the VHD format. Dynamic VHDX is indeed recommended by Microsoft when using Windows Server 2012 (please look in the optimization guide
for Windows Server 2012).
Infact, if we use fixed VHDX then we would have a bigger problem since fixed VHDX are generaly larger then Dynamic Disks, i.e. more data would be copied and that would take longer time = the VMs would be unresponsive for a longer time.
The post "What's the deal with the System Volume Information folder"
http://blogs.msdn.com/b/oldnewthing/archive/2003/11/20/55764.aspx is for Windows XP / Windows Server 2003 and some things has changed since then. for instance In Windows Server 2012, Shadow Copies cannot be controlled by going to Control panel -> System.
Instead you right-click on a Drive (i.e. a Volume, for instance the C drive/Volume) in Computer and then click "Configure Shadow Copies".
Windows Server 2008 R2 Backup problem
http://social.technet.microsoft.com/Forums/en/windowsbackup/thread/0fc53adb-477d-425b-8c99-ad006e132336 - This post is about the Antivirus software trying to scan files used during backup that exists in the System Volume Information folder and we do not
have any antivirus software installed on our hosts as I stated in my post.
Comment that might help us:
So according to “System Volume Information” definition, the operation you mentioned is Volume Shadow Copy. Check event viewer to find Volume Shadow Copy related event logs and post them.
Why?
Furhter investigation suggests that a volume shadow copy is somehow created even though the Schedule for Shadows Copies is turned off for all drives. This happens at random and we have not found any pattern. Yesterday this operation took almost all available
disk space (over 200 GB), but all the disk space was released when I turned on scheduled Shadow Copies for the CSV.
I therefore draw these conclusions:
The CSV Volume has about 600 GB of disk space and since Volume Shadows Copy used 200 GB, or about 33% of the disk space, and the default limit is 10% then I conclude that for some reason the unscheduled Volume Shadow Copy did not have any limit (or ignored
the limit).
When I turned on the Schedule I also change the limit to the minimum amount which is 320 MB and this is probably what released the disk space. That is, the unscheduled Volume Shadow Copy operation was aborted and it adhered to the limit and deleted the
Volume Shadow Copy it had taken.
I have also set the limit for Volume Shadow Copies for all other volumes to 320 MB by using the "Configure Shadow Copies" Window that you open by right clicking on a drive (volume) in Computer and then selecting "Configure Shadow Copies...".
It is important to note that setting a limit for Shadow Copy Storage, and disabaling the Schedule are two different things! It is possible to have unlimited storage for Shadow Copies when the Schedule is disabled, however I do not know if this was the case
Before I enabled Shadow Copies on the CSV since I did not look for this.
I now have defined a limit for Shadow Copy Storage to 320 MB on all drives and then no VHDX should be copied to System Volume Information since they are all larger than 320 MB.
Does this sound about right or am I drawing the wrong conclusions?
Limits for Shadow Copies:
Below we list the limits for our two hosts:
"Primary Host":
C:\>vssadmin list shadowstorage
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2012 Microsoft Corp.
Shadow Copy Storage association
   For volume: (\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\)\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\)\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (91%)
Shadow Copy Storage association
   For volume: (E:)\\?\Volume{dc0a177b-ab03-44c2-8ff6-499b29c3d5cc}\
   Shadow Copy Storage volume: (E:)\\?\Volume{dc0a177b-ab03-44c2-8ff6-499b29c3d5cc}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (0%)
Shadow Copy Storage association
   For volume: (G:)\\?\Volume{f58dc334-17be-11e2-93ee-9c8e991b7c20}\
   Shadow Copy Storage volume: (G:)\\?\Volume{f58dc334-17be-11e2-93ee-9c8e991b7c20}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (3%)
Shadow Copy Storage association
   For volume: (C:)\\?\Volume{e3ad7fec-178b-11e2-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (C:)\\?\Volume{e3ad7fec-178b-11e2-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (0%)
C:\>cd \ClusterStorage\Volume1
Secondary host:
C:\>vssadmin list shadowstorage
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2012 Microsoft Corp.
Shadow Copy Storage association
   For volume: (\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\)\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\)\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 35,0 MB (10%)
Shadow Copy Storage association
   For volume: (D:)\\?\Volume{5228437e-9a01-4690-bc40-1df85a0e6736}\
   Shadow Copy Storage volume: (D:)\\?\Volume{5228437e-9a01-4690-bc40-1df85a0e6736}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 27,3 GB (10%)
Shadow Copy Storage association
   For volume: (C:)\\?\Volume{b2951139-f01e-11e1-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (C:)\\?\Volume{b2951139-f01e-11e1-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 6,80 GB (10%)
C:\>
There is something strange about the limits on the Secondary host!
I have not in any way changed the settings on the Secondary host and as you can see, the Secondary host has a maximum limit of only 35 MB storage on the CSV, but it also shows that this is 10% of the Volume. This is clearly not the case since 10% if 600
GB = 60 GB!
The question is, why does it by default set a too small limit (i.e. < 320 MB) on the CSV and is this the cause of the problem? I.e. is the limit ignored since it is smaller than the smallest amount you can provide using the GUI?
Is the default 35 MB maximum Shadow Copy limit a bug, or is there any logical reason for setting a limit that according to the GUI is too small?

Crystal Reports XI R2 and Window Server 2008 Hyper-V environment

Hello,
Is there any known issue that Crystal Reports XI R2 running on Window Server 2008 Hyper-V enviroment?
I tested on Development Server which is Window Server 2008 and it is working fine but when tested with another servers which are in Hyper-V enviroment and ASP.NET program keep crushing.
I got the below error on my event log:
Faulting application w3wp.exe, version 7.0.6002.18005, time stamp 0x49e023cf, faulting module unknown, version 0.0.0.0, time stamp 0x00000000, exception code 0xc0000005, fault offset 0x03976ce8, process id 0x%9, application start time 0x%10.
Thanks,
Yin

Hi Yin,
Hyper-V I assume is the Hyper threading Intel and others enabled correct? Should not make a difference other than performance. You are still using 1 CPU so the cycles are being split between multiple programs. Not really an advantage.
Try using ProcessMonitor and search on access denied to see what is having the problem.
Other issue is CR XI R2 is not supported on windows 2008, or at least you should be running Service Pack 6 to at least get Windows 7 and Vista support, which is about the same as Windows 2008.
Go to our download page and install SP 4 full build and then SP 6. ( assuming you don't have any SP's installed ) or look in the download area and download all of the patches from SP 4 as well as the distribution files for how ever you are deploying your application.
Thank you
Don

Windows 2012 R2 Hyper-V event id's 20144 and 15130

Windows 2012 R2 Hyper-V.
After installing the May 2014 MS updates we can no longer start any of the guest VM's. When attempting to start a VM the following is logged in the event logs:
Event id 20144 from Hyper-V-VMMS "Failed to start the virtual machine XYZ' because one of the Hyper-V components is not running" and
Event id 15130 from Hyper-V-VMMS "XYZ' failed to start"
We've looked at http://support.microsoft.com/kb/2761004/en-us and as far as we see the I/O verification option in Driver Verifier is disabled.   We also uninstalled the May
2014 updates that we applied just before the problem started but this did not make a difference.
Help please.

Hi,
I don’t found the similar issue when update, but from the event id, it seems is the incompatible hardware driver, please try to update all your hardware driver and firmware.
Or you can try the following example command to confirm your Hyper-V service is running or not.
=================================================
C:\Users\Administrator>sc queryex vid
SERVICE_NAME: vid
TYPE
: 1 KERNEL_DRIVER
STATE
: 4 RUNNING
(STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
WIN32_EXIT_CODE    : 0 (0x0)
SERVICE_EXIT_CODE : 0 (0x0)
CHECKPOINT         : 0x0
WAIT_HINT
: 0x0
PID
: 0
FLAGS
C:\Users\Administrator>sc queryex vmbus
SERVICE_NAME: vmbus
TYPE
: 1 KERNEL_DRIVER
STATE
: 1 STOPPED
WIN32_EXIT_CODE    : 1077 (0x435)
SERVICE_EXIT_CODE : 0 (0x0)
CHECKPOINT         : 0x0
WAIT_HINT
: 0x0
PID
: 0
C:\Users\Administrator>
===========================================
The related KB:
You cannot start Hyper-V virtual machines after you enable the I/O verification option on a Hyper-V host computer that is running Windows Server 2012 or Windows 8
http://support.microsoft.com/kb/2761004/en-us
The similar thread:
Hyper-V - 'Failed to start the virtual machine 'test' because one of the Hyper-V components is not running.'
http://social.technet.microsoft.com/Forums/windowsserver/en-US/d7e13a44-a9c3-4cb6-b45a-6b347f32b97c/hyperv-failed-to-start-the-virtual-machine-test-because-one-of-the-hyperv-components-is-not?forum=winserverhyperv
Hope this helps.
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Windows Server 2012 - Hyper-V - iSCSI SAN - All Hyper-V Guests stops responding and extensive disk read/write

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN.
Our setup:
Hosts - Both run Windows Server 2012 Standard and are clustered.
HP ProLiant G7, 24 GB RAM, 2 teamed NIC dedicated to Virtual Machines and Management, 2 teamed NIC dedicated to iSCSI storage. - This is the primary host and normaly all VMs run on this host.
HP ProLiant G5, 20 GB RAM, 1 NIC dedicated to Virtual Machines and Management, 2 teamed NIC dedicated to iSCSI storage. - This is the secondary host that and is intended to be used in case of failure of the primary host.
We have no antivirus on the hosts and the scheduled ShadowCopy (previous version of files) is switched of.
iSCSI SAN:
QNAP NAS TS-869 Pro, 8 INTEL SSDSA2CW160G3 160 GB i a RAID 5 with a Host Spare. 2 Teamed NIC.
Switch:
DLINK DGS-1210-16 - Both the network cards of the Hosts that are dedicated to the Storage and the Storage itself are connected to the same switch and nothing else is connected to this switch.
Virtual Machines:
3 Windows Server 2012 Standard - 1 DC, 1 FileServer, 1 Application Server.
1 Windows Server 2008 Standard Exchange Server.
All VMs are using dynamic disks (as recommended by Microsoft).
Updates
We have applied the most resent updates to the Hosts, WMs and iSCSI SAN about 3 weeks ago with no change in our problem and we continually update the setup.
Normal operation
Normally this setup works just fine and we see no real difference in speed in startup, file copy and processing speed in LoB applications of this setup compared to a single host with 2 10000 RPM Disks. Normal network speed is 10-200 Mbit, but occasionally
we see speeds up to 400 Mbit/s of combined read/write for instance during file repair
Our Problem
Our problem is that for some reason all of the VMs stops responding or responds very slowly and you can for instance not send CTRL-ALT-DEL to a VM in the Hyper-V console, or for instance start task manager when already logged in.
Symptoms (i.e. this happens, or does not happen, at the same time)
I we look at resource monitor on the host then we see that there is often an extensive read from a VHDX of one of the VMs (40-60 Mbyte/s) and a combined write speed to many files in \HarddiskVolume5\System Volume Information\{<someguid and no file extension>}.
See iamge below.
The combined network speed to the iSCSI SAN is about 500-600 Mbit/s.
When this happens it is usually during and after a VSS ShadowCopy backup, but has also happens during hours where no backup should be running (i.e. during daytime when the backup has finished hours ago according to the log files). There is however
not that extensive writes to the backup file that is created on an external hard drive and this does not seem to happen during all backups (we have manually checked a few times, but it is hard to say since this error does not seem leave any traces in event
viewer).
We cannot find any indication that the VMs themself detect any problem and we see no increase of errors (for example storage related errors) in the eventlog inside the VMs.
The QNAP uses about 50% processing Power on all cores.
We see no dropped packets on the switch.
(I have split the image to save horizontal space).
Unable to recreate the problem / find definitive trigger
We have not succeeded in recreating the problem manually by, for instance, running chkdsk or defrag in VM and Hosts, copy and remove large files to VMs, running CPU and Disk intensive operations inside a VM (for instance scan and repair a database file).
Questions
Why does all VMs stop responding and why is there such intensive Read/Writes to the iSCSI SAN?
Could it be anything in our setup that cannot handle all the read/write requests? For instance the iSCSI SAN, the hosts, etc?
What can we do about this? Should we use MultiPath IO instead of NIC teaming to the SAN, limit bandwith to the SAN, etc?

Hi,
> All VMs are using dynamic disks (as recommended by Microsoft).
If this is a testing environment, it’s okay, but if this a production environment, it’s not recommended. Fixed VHDs are recommended for production instead of dynamically expanding or differencing VHDs.
Hyper-V: Dynamic virtual hard disks are not recommended for virtual machines that run server workloads in a production environment
http://technet.microsoft.com/en-us/library/ee941151(v=WS.10).aspx
> This is the primary host and normaly all VMs run on this host.
According to your posting, we know that you have Cluster Shared Volumes in the Hyper-V cluster, but why not distribute your VMs into two Hyper-V hosts.
Use Cluster Shared Volumes in a Windows Server 2012 Failover Cluster
http://technet.microsoft.com/en-us/library/jj612868.aspx
> 2 teamed NIC dedicated to iSCSI storage.
Use Microsoft MultiPath IO (MPIO) to manage multiple paths to iSCSI storage. Microsoft does not support teaming on network adapters that are used to connect to iSCSI-based storage devices. (At least it’s not supported until Windows Server 2008 R2. Although
Windows Server 2012 has built-in network teaming feature, I don’t article which declare that Windows Server 2012 network teaming support iSCSI connection)
Understanding Requirements for Failover Clusters
http://technet.microsoft.com/en-us/library/cc771404.aspx
> I have seen using MPIO suggests using different subnets, is this a requirement for using MPIO
> or is this just a way to make sure that you do not run out of IP adressess?
What I found is: if it is possible, isolate the iSCSI and data networks that reside on the same switch infrastructure through the use of VLANs and separate subnets. Redundant network paths from the server to the storage system via MPIO will maximize availability
and performance. Of course you can set these two NICs in separate subnets, but I don’t think it is necessary.
> Why should it be better to not have dedicated wireing for iSCSI and Management?
It is recommended that the iSCSI SAN network be separated (logically or physically) from the data network workloads. This ‘best practice’ network configuration optimizes performance and reliability.
Check that and modify cluster configuration, monitor it and give us feedback for further troubleshooting.
For more information please refer to following MS articles:
Volume Shadow Copy Service
http://technet.microsoft.com/en-us/library/ee923636(WS.10).aspx
Support for Multipath I/O (MPIO)
http://technet.microsoft.com/en-us/library/cc770294.aspx
Deployments and Tests in an iSCSI SAN
http://technet.microsoft.com/en-US/library/bb649502(v=SQL.90).aspx
Hope this helps!
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Windows Server 2008 r2 as Windows XP Pro 2.0 (Issue: 1)

Windows Server 2008 r2 as Windows XP Pro 2.0 (Issue: 1)
Flabbergasted at the sheer level of idiocy required to use Windows 7 Ultimate or Windows 8.1 Pro I remain a stead fast winXPro user to this day (mid-2014) and beyond. My i3-3225 XP machine turns 2000+ Passmark system scores and excels at everything the
way we all use to, before Microsoft's policy of operating systems built for idiots, by idiots came to pass. Then as a sheer act of desperation I tried Server 2008 r2... is it the OS I have dreamed of? Short of an XP Theme conversion kit I have questions...
Problem 1) Windows Explorer: In the folder directory left pane... the little [+] box next to the folder names flash on and off each time I use the right window pane. Can I by any and all means make them not do this, remain visible, sit still; like XP used
to do?
Problem 2) Start Menu: This popup is a double wide window pane, two columns of annoyance. Can I reduce this to a single wide by removing the right pane entirely by any and all means. I have removed every button from the right pane, but it still exists, it still
has a default picture user icon and says Administrator.
Problem 3) If specific programs/drivers are unavailable for this OS 2008 r2, I presume win 7 x64 by default work.
Problem 4) Passmark benchmarking software tested my system, with windows 8.1 I had a processor score of 9,400, but server 2008 r2 put out only 8,100 in repetitive tests. Why the slowdown? I only use this as an XP like os, no actual server stuff, should i disable
something?

Windows Server is not intended to replace Windows XP. i would advice to try Windows 7 or 8 instead.
1) I cannot picture what you mean. ther is a setting to define wheter the left pane should follow if you browse in the right one. Tools- folder options- general 'navigation pane'
2)Windows vista/2008 is the last version that had a (optional) single pane start menu. if you don't like the current one, ther is third party software available to replace the start menu
3) yes, these will be ok
4) 2008 R2 is a server OS and is out-of-the bow not optimized for foreground applications. Windows 8.1 on the other hand is a newer and more performant OS optimized for client usage. in both cases a lot of performance gain is to be expected by selecting
the right drivers, disabling or unisntalling unneeded software and windows features, disabling unneeded services. I would recommend to (a least) go to computer properties -advanced settigns- advanced and set 'adjust for best perfomance of" to programs (instead
of background services)
MCP/MCSA/MCTS/MCITP

X201 Windows 8.1 Keyboard driver issue

I tried clean installing Windows 8.1 on my ThinkPad X201T
The Windows itself installs without any issue, but for some reason the keyboard drivers seem to be out of order. They will either not load up at all, or take incredibly long time to load up.
I've tried endless versions of Drivers, but none of them works to me. Newest drivers just don't work at all, and very old, early Windows 7 drivers and Vista-era drivers also have some problems.
Is there anyone who has successfuly set up Windows 8.1 and the drivers on ThinkPad X201, or other ThinkPads with 1st Gen Core i processor?
Kim
W540( ), Helix(Sold), Tablet 2(Sold) Tablet 2( ), X120e(Sold), X201 Tablet, X41 Tablet(Sold), X41, X32*4, 701C*4

I tried clean installing Windows 8.1 on my ThinkPad X201T
The Windows itself installs without any issue, but for some reason the keyboard drivers seem to be out of order. They will either not load up at all, or take incredibly long time to load up.
I've tried endless versions of Drivers, but none of them works to me. Newest drivers just don't work at all, and very old, early Windows 7 drivers and Vista-era drivers also have some problems.
Is there anyone who has successfuly set up Windows 8.1 and the drivers on ThinkPad X201, or other ThinkPads with 1st Gen Core i processor?
Kim
W540( ), Helix(Sold), Tablet 2(Sold) Tablet 2( ), X120e(Sold), X201 Tablet, X41 Tablet(Sold), X41, X32*4, 701C*4

Windows 8.1 Hanging / performance issue

Hi ,
Today i clean install using windows 8.1 and after that i am facing lot of issues. like,.
1. Installation itself very slow. ( extracting files took almost 30 mins )
2. After successfully installed . ( by clicking any icons it hangs for 2-5 seconds ) then it responds.
3. whenever i typing in notepad or over internet explorer its letters are getting missed out due to hanging issue.
4. even i re downloaded the win8.1 pro iso , tried on different handrive, but still result is same ( handing ).
5. but i having issue only with this 8.1 where i am already using windows 8 pro without any issue on my pc
6. configuration of my pc ( Core to Quad processor ) with 4.5 TB hardrive.
Need suggestion how do i fix this issue.

NM
To find what is causing your computer to use more CPU than it normally does you need to run this.
Install the WPT (windows Performance Toolkit) http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt.aspx ,
Open a CMD prompt with administrative rights (right click it>run as admin) and run this command for 60 secs to capture the high cpu usage:
xperf -on latency -stackwalk profile -buffersize 1024 -MaxFile 256 -FileMode Circular && timeout -1 && xperf -d cpuusage.etl
The trace will run and give you a warning then revert to a C:\ prompt
The log will be in C:\windows\system32.
It should be called cpuusage.etl
Please zip the file and upload it to skydrive (or another file sharing service) and put a link to it in your next post.
Wanikiya and Dyami--Team Zigzag

Windows 8.1: Printer Offline Issue

Windows 8.1: Printer Offline Issue
If you have seen issues where your laptops/tablets has been taken from a private (home) network to a public network and then not been able to print when returning back to your private (home) network. This is most likely due to the public network settings not being reset back to the private (home) network settings. If this sounds like an issue you are having- try resetting your network settings by following the steps in the documents linked here:
For Ink Printers, please visit this document to help resolve your issue:
Print Jobs are Stuck in Queue
For LaserJets, please visit this document to help resolve your issue:
HP Laserjet - Printer offline and unable to print on a network in Windows 8.1
Install this Microsoft patch to make sure this private-public-private network issue does not reoccur. It is part of the April 2014 Windows Update package for Windows 8.1 and Server2012 R2 (http://support.microsoft.com/kb/2919355).
If you experience this issue before you apply the patch, you must manually reset your network settings for this patch to function. Please refer to the above documents for manual reset help.
I am an HP employee.
Say Thanks by clicking the Kudos Star in the post that helped you.
Please mark the post that solves your problem as Accepted Solution

Hello All,
The printer goes offline due to proper driver is not installed correctly or if the printer port is not selected correctly.
I would suggest that you check the printer port (if the printer is connected via USB then chck if you have selected USB001,002... OR DOT), if the printer is connected via Network then check if the printer is selected via TCP/IP and then check the results.
Alternatively, you may uninstall and reinstall the driver and then check the results.
Regards,
HP Laserjet team

RDP to Windows 8 or 8.1 issues - admin or console connection not working

Hi,
I have a number of issues when connecting to my Win8 Pro (and now Win8.1 Pro) machine via RDP. First off, I know that most of the issues I am about to list below should technically be resolved if I connect to the console or admin session of my machine, however
they don't.
The issues I am having are:
1. If the user is already logged in, when I connect I get a black screen for a few minutes before I can actually see the desktop, etc
2. If there is no user logged in already, then when I connect I get a black screen and then never actually see the desktop, therefore I have to reboot the machine, physically log into the machine and then I am able to RDP successfully.
Note: I have done some research on issues # 1 & 2 and I think this is because of my Nvidia drivers - as I have a Nvidia GTX660 Ti installed.
Although issues #1 and #2 are annoying, they are nothing like the issue I am experiencing below:
3. Once I am logged in and can access and use the machine, no matter if I am connected to the console session of the machine or not, I can't run most applications. For example if I start Command Prompt, or try and access any Control Panel item, or System
Properties, etc I get the following error:
"The application was unable to start correctly (0xc0000142). Click OK to close the application."
4. In addition, I can't do any kind of administrative function on the machine I am RDP'ing. I can't install software, I can't access any form of system setting, I can't power on VMs in VMware Workstation, etc.
The user I am logging in as is a local administrator and I am connecting to (or at least I am trying to) connect to the console session of the machine. I have tried this from the following different setups:
1. Another Windows 8.1 Pro running mstsc /admin and just normal mstsc
2. From my Mac using Microsoft Remote Desktop app and ensuring I select the "Connect to Console session" option
TROUBLESHOOTING:
================
In order to attempt to resolve this problem, I have done the following troubleshooting:
1. From the problematic Win8.1 Pro machine, I have RDP'd (via mstsc /admin) to my other Win 8.1 Pro machine. I have tested running cmd, installing apps, etc, etc and I have been able to do everything just as I should. To me this means that there is some
sort of configuration issue between the two machines.
2. Based on the information from #1 above, I have compared the following settings between the two machines and have set them to be exactly the same:
- User Accounts - same settings (local admin, etc) + UAC disabled
- Windows Firewall - both on and set to default settings
- Local Groups have the same members - Local Administrators, Remote Desktop Users, etc
- Remote Desktop enabled and set to least restrictive option (less secure option)
- Local Security Policy - Checked Local Security Settings to ensure all settings are exactly the same
- Local Group Policy - in particular for Remote Desktop settings - both exactly the same configuration
- No additional 3rd party apps are installed on either machine which I think could cause these issues (other than Nvidia Graphics Card drivers on my problematic machine)
3. Done extensive internet research and can't seem to find any information or people having the same issue as myself
4. Clean install of Windows 8 Pro and tested - same issue. Installed all latest drivers, Windows Updates, etc c- same issue. Upgraded to Windows 8.1 Pro - same issue.
5. Created a new local administrator user and tested - same issue
6. Checked event viewer and can't seem to find any specific error that would give insight into what is causing this issue
At this point, I have come to a dead-end as I am not sure what else I can try to resolve this issue. If issues #1 and #2 can't be resolved, then I am happy to "live" with them, however the rest of the issues are really frustrating as they are preventing
me from easily achieving what I need to.
If anyone can point me in the right direction or has some insight into these issues, it would be greatly appreciated.
Thanks very much
Regards,
Luca

Hi Roger,
Thanks for the reply. I should have mentioned that test result before, sorry I forgot. If I log into the problem machine locally with the same user I am logging into when logging in via RDP, I can run cmd, I can install apps, I can do everything as I should
be able to as I am a local admin and have disabled UAC.
If however I log in with the same user via RDP (whether or not I have already logged into that machine locally with the user or not), I have the problem of no admin access. This is why I think it is a problem accessing the console or admin session of the
machine.
Sorry, but I am not sure by what you mean by this question "If so, how about change other computer to
remote to this problematic Win8.1 Pro machine?"
Thanks for your help
Regards,
Luca

Windows 8.1 Hyper-V virtualization rights

So in Windows 7 Pro we had XP mode. It was a full copy of XP which was licensed under the Windows 7 Pro license. Do I have the licensing rights to install Windows 7 Pro on my Windows 8/8.1 machine using Hyper-V?
Quite often my company uses XP mode to run 16 bit applications, or apps that just seem to work better on a 32 bit system, but I really don't want to have to keep getting Windows 7 machines when 8/8.1 works fine except for these old apps which I need an older/32
bit system.

Hi,
The Windows 8 x86 can run the 16-bit application， please refer to the following link.
http://social.technet.microsoft.com/forums/windows/en-US/d03a56cb-0039-42b7-962d-a389caab99f9/installing-windows-8-32bit
I don’t think you have the license right of the Windows 7 Pro in Windows 8 Hyper-v, if you don’t buy it.
Please refer to the license agreement as follow.
http://download.microsoft.com/Documents/UseTerms/Windows_8_English_ca383862-45cf-467e-97d3-386e0e0260a6.pdf
Additionally, if you install the Windows 7 in Hyper-v, you will not be able to use XP mode, because XP mode is a vitual mode and the Hyper-v is a virtual machine.
You can't use vitual mode in a virtual machine. Please refer to the following link.
http://social.technet.microsoft.com/forums/windows/en-US/78578f0d-4891-4bbf-8bbb-6b9eb05bc031/want-to-run-xp-mode-on-windows-7-vm-on-hyper-v
If there are any problems, please let me know.
Best regards

Windows 8.1 - install windows xp in hyper-v

Ive setup hyper-v on my desktop pc (Windows 8.1 64bit) and Im trying to install windows xp. I followed these instructions
http://www.techrepublic.com/blog/windows-and-office/install-windows-xp-in-windows-8-client-hyper-v/6732/
and have the virtual machine running, seemingly ok. I have created a windows xp install disk and inseretd it into the cd drive and set the operating system to install from cd (my 'E' drive). whenever I start up the vm I get this message
'Boot failure. Reboot and select proper boot device or insert boot media in selected boot device'
The cd contains the setup for xp and it runs ok. I dont know where to go from here, as far as I can see everything is setup ok, but I cant install XP. Can anyone help ?

Hi,
First,we need to confirm the followin setting.
1.If you want to install Windows XP, we must select generation 1 virtual machines.
2.Physical CD/DVD drive setting.
Also,I suggest you install XP by ISO file to check the result.
Regards,
Kelvin hsu
TechNet Community Support

Windows 2012 R2 RDS Licensing Issue

I setup RDS License Server role in our domain controller server and installed open license RDS User CAL. From the connection broker server, I setup RDS Deployment's RD Licensing to per user and added the domain controller from the license server
list. RD Licensing Diagnoser output is ok and able to detect the license server. All servers are windows 2012 R2.
Now the issue is, when using RD Web access and launching the application, the license manager is still showing 0 issued license. Tried opening several sessions, more than the number of license seats available and still RDS still works fine. Wondering
whether license server is functioning properly. Let me know if someone experienced the same thing.
Thanks!
Joe

Hi Joe,
Thank you for posting in Windows Server Forum.
Have you find any specific error\event id for this case?
As you have Per User CAL and to see your Per User RDS CAL usage you need to create a report, save it to a .csv file, and then view the csv file in Notepad/Excel. We can do this in RD Licensing Manager by right-clicking on the server name, choosing Create
Report - Per User CAL Usage, and then after you have the report right-click on it and choose to save it as csv.
Hope it helps!
Thanks.
Dharmesh Solanki
TechNet Community Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Windows 8.1 Hyper-v issue

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