Randomly losing connectivity

Firefox always seems to just freeze (in regard to connectivity, not to program activity) all the time and hang on "connecting...." I will usually open IE to see if it is a connection problem, and IE works fine ("fine" being solely in regard to connectivity). I usually restart firefox and it is fine. I know this sounds like an easy fix if I have one tab open with google or something, but when I'm doing something online with multiple tabs open, or if I can't save what I'm doing first because it won't connect, it becomes more of a pain. I have never had this problem until firefox 7 (actually, everything after 3).
Is there a caching issue with the new firefox?? Is there a setting I need to adjust? I don't get it, it happens all the time. I'll be browsing the internet, then out of nowhere, it everything will just hang. Since it predominately happens when I open a few tabs quickly in concession, I thought it was just a bandwidth issue and it would take a little longer. But then I would stop all of the tabs but one, and that didn't help. Then I would stop ALL of the tabs, and just try to open google, and even that wouldn't open. Not until I restarted firefox. Normally, I would just think I overwhelmed firefox, but this has never happened until the latest versions of firfox. I could have near 20 tabs open in the old ones and the only issues I'd have would be bandwidth issues if I were trying to connect on too many tabs at the same time. Now it seems to completely crash firefox's connection.

The default of the pref network.http.max-connections has been increased from 30 to 256 in Firefox 6+ versions.
Try to decrease the value of the pref <b>network.http.max-connections</b> from 256 to 30 as used in Firefox 3 versions.
*https://support.mozilla.com/kb/Firefox+never+finishes+loading+certain+websites

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Live migration Vnic on hosts randomly losing connectivity HELP

Hello Everyone,
I am building out a new 2012 R2 cluster using VMM with converged network configuration. I have 5 physical nics and teaming 3 of them using dynamic load balancing. I have configured 3 virtual network adapters in host which are for management,
cluster and Live migration. The live migration nic loses connectivity randomly and fails migrations 50% of the time.
Hardware is IBM blades (HS22) with Broadcom Netextreme II nics. I have updated firmware and drivers to the latest versions. I found a forum with something that looks very similar but this was back in November so Im guessing there is a fix.
http://www.hyper-v.nu/archives/mvaneijk/2013/11/vnics-and-vms-loose-connectivity-at-random-on-windows-server-2012-r2/
Really need help with this.
Thanks

Hi,
Does your cluster can pass the cluster validation test? Please install the recommended hotfixes and updates for Windows Server 2012 R2-based failover clusters update first
then monitor again.
More information:
Configuring Windows Failover Cluster Networks
http://blogs.technet.com/b/askcore/archive/2014/02/20/configuring-windows-failover-cluster-networks.aspx
Hope this helps.
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Losing Connection From BT Hub

Hi All,
Not posted here before but hopefully I provide the info needed
I have a BT Home Hub 2.0 (Black with blue lights down right hand side) with firmwhere 4.7.5.1.83.3.31 (Type B) and a Broadband Accelarator/I-Plate at the main phone socket in the wall.
I have worked from home for a number of years and rely on the internet, I have 2 laptops (1 wireless and one ethernet) and 1 gaming machine (also on ethernet). The problem I am having is that my gaming machien on ethernet randomly losing connection with the BT hub while my other 2 laptops on wireless and ethernet remain connected. It's strange as the others are still working. I can either fix the problem by clicking on the connection icon near the clock and letting windows fix it or restart the machine where it also fixes it.
The gaming machine spec is:
Manufacturer:        Self built
Processor:             Intel Core 2 Quad CPU @ 2.40GHz (4 CPUs)
Memory:       8 GB DDR2
Hard Drive:            Western Digital Caviar Blue 250GB SATA-II 16MB Cache
Video Card:           NVIDIA GeForce GTX 570 12804MB GDDR5
Operating System: Windows 7 Professional 64-bit (6.1, Build 7600)
Motherboard:        NVIDIA NForce 680i SLI
Computer Case:    Antec 900 Ultimate Gaming Case
The only thing I have changed on my gaming machine is the graphics card, sometimes the internet would be fine for hours then lose connections, othertimes I lose connection after 20 minutes. I have not managed to tie it down to any software or game that causing the problem. It's really strange. Before this problem, the gaming machine has been fine on ethernet connection for the past year. I have not changed any other hardware of BT Lines etc.
Any pointers would be greatly appreacited
Thanks!
Solved!
Go to Solution.

Hi John 46, thanks for the quick reply.
I reset my hub about an hour & 1/2 a go, here are the ADSL setting details:
ADSL line status
Connection Information
Line state   Connected
Connection time   0 days, 01:50:15
Downstream   3,040 Kbps
Upstream   448 Kbps
ADSL Settings
VPI/VCI   0/38
Type   PPPoA
Modulation   G.992.1 Annex A
Latency type   Interleaved
Noise margin (Down/Up)   10.3 dB / 23.0 dB
Line attenuation (Down/Up)   52.9 dB / 31.5 dB
Output power (Down/Up)   5.0 dBm / 1.6 dBm
Loss of Framing (Local/Remote)   0 / 0
Loss of Signal (Local/Remote)   0 / 0
Loss of Power (Local/Remote)   0 / 0
FEC Errors (Down/Up)   102 / 1
CRC Errors (Down/Up)   53 / 5
HEC Errors (Down/Up)   84 / 0
Error Seconds (Local/Remote)   38 / 1
Here are the speed test results:
Test1 comprises of Best Effort Test: -provides background information.
Download Speed
1378 Kbps
0 Kbps 2000 Kbps
Max Achievable Speed
Download speedachieved during the test was - 1378 Kbps
For your connection, the acceptable range of speeds is 400-2000 Kbps.
Additional Information:
Your DSL Connection Rate :3040 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 1500 Kbps
We normally only get about 2mb as we live in a Village and are fairly far away from the exchange. We are option 3 unlimited.
I did the quiet line test, which appeared fine.
Thanks for the continued help.

Wireless Keyboard keeps losing connection

My wireless keyboard started getting hung up on a key and continues to to type it until the KB loses connection. Then it reconnects and sometimes repeats this several times before it starts working normally again.
It has also just been randomly losing connection without hanging up on a key.
Batteries are new and the iMac/keyboard and mouse is less than a year old.
Any thoughts?
Mouse is losing connection too at times, but nothing like the keyboard.

Hello B:
One thing to try is to make the devices "favorites" Directions for that are in other posts of mine.
However, the keyboard (from your description) could be faulty. Since it is less than one year old, I suggest you call Applecare with a warranty issue. I had a KB replaced (in warranty) a couple of years ago. Apple replaced it and paid the shipping both ways.
Barry

Randomly losing network connection over wireless

Shortly after installing the 10.4.5 software update, my G4 iBook with built-in Airport Extreme card has been losing connection with increasing frequency. Built-in Ethernet use is unaffected. I'm calling this problem thrash-and-drop.
1. When it's losing signal, processor activity goes through the roof. I had Activity Monitor running during a thrash-and-drop. kernel_task CPU consumption goes from under 1% before the event, to over 80% during the thrashing, and back under 1% after the thrashing stops. The activity is so bad the cursor can't be controlled: using the track pad sends the pointer all over the screen or nowhere at all.
2. This has been observed to occur with two different wireless base stations: A Linksys WRT54G and an older SMC 802.11b router. Either router is within 10 feet of the computer. Only one is running at a time. There are no other base stations in range.
3. Another iBook G4 (OS 10.3, Airport Extreme card (not built-in)), sitting next to it, shows no change and its wireless behavior is unaffected.
Initially, this seemed more likely to happen when Safari was loading Flash-heavy pages. And after thrashing and dropping a connection, it was able to reconnect after either a reboot or a five minute sleep. Currently, it can't connect to a base station for more than a minute. Most recently, it thrashed and dropped while I was selecting the base station to use. This is true regardless of the application running. In fact, it will thrash-and-drop when there are no user applications running at all, after a fresh reboot.
I've tried the following things to address the problem. None have affected the thrash-and-drop problem. Admittedly, most of this is random:
1. Back up and delete network preferences in /Library/Preferences/SystemConfiguration
2. Turn off IPv6 in System Preferences/Network
3. Back up and delete network preferences in ~/Library/Preferences (com.apple.NetInfoManager.plist and com.apple.NetworkUtility.plist)
Has anybody else seen this problem? I want to blame it on the 10.4.5 upgrade but I haven't seen anybody else complaining about 10.4.5 doing this to them. If there's something I can do to fix this in a software setting, I'd much prefer that to yet another roadtrip to the Apple store.
1.33 GHz G4 iBook Mac OS X (10.4.5)

Hi!
I have the same problem of randomly losing network connection over wireless, though mine is hardly related to surfing.
I have an external storage drive in which I use for backup of my stuff, and I access the drive via my modem, using the airport. Of late, I noticed that when copying files from my iBook to the external drive, the connection would suddenly drop before the transfer is completed. This began to occur with increasing frequency, particularly when transferring large files.
I have since abandoned wireless connection, and reverted to my trusty cable. Still, I admit that I'm really curious about the cause of the apparent lack of reliability with my wireless connection. Has it something to do with the airport?
1.33 GHz iBook G4 Mac OS X (10.4.5) New to Mac, just switched from Windows 4 months ago.

Network Drives Losing Connection from Server 2012 to Windows 7 64bit Machines

I have about 20 users at my facility and recently upgraded our server from one running server 2003 to one running server 2012. Since that occurred, I have had numerous issues that I did not encounter on the old server.
Lately, users have been losing connection to the shared network drives randomly and constantly. The drives will come back on-line on their own but it could be 2 minutes or 30 minutes before they do and when users are in the middle of working on a document
from the network, they are unable to save until the drive comes back. Manually disconnecting and re-mapping them works sometimes but then the problem will re-occur. I have tried re-doing the shares and security settings and run a couple of supposed hotfixes
on the client side and the server side to no avail.
Now our regional office is suggesting that I re-connect the old server and then rebuild the new one with server 2008 r2, something I would like to avoid if possible.
I feel like this is a simple setting that I am missing, no conditions have changed except for the new server.
The server is a Intel Xeon CPU E5-2609 2.40GHz with Server 2012 64 bit on it. All computers (except on on 32 bit) are running Windows 7 Enterprise edition 64 bit.
Please help.

I made this change to the registry on the server and am waiting to see if I have any more drops.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
Value:
autodisconnect
Data
type : REG_DWORD
Value:
ffff (Hex)
There was a client side change suggested but I am missing that value for the client side change and others in the organization who don't have it are not experiencing this problem.

HT2845 why does my wireless mouse keep losing connection?

Good morning,
My wireless mouse keeps losing connection...my batteries are at 100% and the "discoverable" option is checked off. Why is this happening?

Hi:
PRAM=parameter random access memory - reset like this:
http://support.apple.com/kb/PH11243
SMC=system management controller reset like this:
http://support.apple.com/kb/HT3964
Sometimes resetting these "fixes" odd problems - and it cannot hurt.
To make a device a favorite, go to system preferences>bluetooth. Highlight the device. If detailed information is not shown, click oin the little gear>show more info. Then click on the gear again and make the device a favorite.
Barry

Access point --- Internet losing connection every 5 minutes....

i have a wrt54g v6 router and a wmp54g both current drivers and firmware from the linksys website. i am frequently losing connection between router and internet. i've lowered my mtu, i've forwarded ports, reinstalled card in all 4 pci slots, i've literally done everything i know possible to do. i sat on the phone for 4 hours waiting on a linksys technician before my phone died friday trying to get ahold of someone for some help. resetting the router doesn't seem to help at all. the connection loss time is random aswell. sometimes it's for minutes sometimes it's for 10 seconds, but when you're playing online games that's all it takes to disconnect you. i've been going absolutely crazy trying to fix this so if anyone has any idea's i would be ever so greatful.
pc specs
windows xp pro sp2
2.0ghz amd 2400+
nvidia 6600 agp
1gb corsair pc2700
160 seagate hd

First off all i don't suggest to play online games on wireless since as we all know wireless is such an unstable media for connection.
Can you tell me the distance between the computer and the router. Also what is in the direct environment of the network.
Are you using a 2.4 GHz cordless phone. This device is can cause intermittent internet connection on wireless networks
we still have to isolate the problem just in case something else is causing your problem.
"Give them nothing... But take from them everything..."
-Leonidas "300"

Wireless Keyboard losing connection while BT headset in use

Hi,
I got a Samsung SBH500 Stereo Headset, and when I'm listening to music and using my Apple Wireless Keyboard and Apple Mighty Mouse, the keyboard keep losing connections.
Already tried to trash the preference file, change the Favorite status of everything, but the problem goes on and on.
While writing this post the connection was lost twice, and it's becoming frustrating...
Help, please.

I decide to run some test.
1) Wireless Keyboard + Wireless Headset + Wired Mouse works fine.
2) Wireless Mouse + Wireless Headset + Internal Keyboard works fine.
3) This is obvious, but to said i tried: Wireless Keyboard + Wireless Mouse works fine.
So here's what I'm thinking...
A software/firmware problem with the Macs bluetooth or the headset uses way too much data so 3 devices is too much. I don't think is too much data, because if it wore probably would disconnect the devices randomly, not only the keyboard.

Aperture Losing Connection With Masters

Hi,
I've been using iPhoto since the beginning and started noticing over the past year it would lose connections with the master files. Thankfully I had backups of each file. So I decided to start rebuilding my library in Aperture from scratch (figured start clean and all). I started importing files and adding metadata and keywords. I didn't get far (literally a day or two) before I realized that Aperture started losing conncetions with the Master files as well.
How I found out is that I used a software called HoudahGeo to geotag some old photos and it gave me the warning that it couldn't find the master files. When I went back to Aperture I clicked on the image and noticed that the "Show in Finder" option was grayed out. I went into the Aperture library itself (because I was having it keep on the images inside the library and not referenced) and noticed that the files were there in the "Masters" folder but Aperture was saying it was missing. When I tried to relocate the original it fixed the one image but then started to break connections with other files and images. I notice it had randomly last connection with different files in different albums.
At this point I'm not sure what to do since I've had this problem with both iPhoto and Aperture. Thankfully I didn't get far before I realized this problem but I was really hoping to use Aperture for all my photos but it makes me worried that it'll lose images like that. I don't want images to get deleted or lost.
Has anyone had this problem or know how to fix it? I sent feedback to Apple so hoping it's a bug they can fix. I'm currently using Mavericks and Aperture 3.5.1.
Thanks!

How I found out is that I used a software called HoudahGeo to geotag some old photos and it gave me the warning that it couldn't find the master files. When I went back to Aperture I clicked on the image and noticed that the "Show in Finder" option was grayed out.
I thought your Aperture library is managed? iPhoto will show the originals for managed images, but not Aperture. "Show in Finder" will be grayed out, if the images is in the Aperture Library package. That does not indicate that Aperture has lost the connection. Broken arrow badges indicate lost originals.
But the problem wasn't HoudahGeo accessing my masters but notifying me that Aperture lost them. Because when I went back to into Aperture I noticed the original files were missing.
What exacty did you see in Aperture, that the orignals are missing? Badges with broken arrows?
I went into the Aperture library itself (because I was having it keep on the images inside the library and not referenced) and noticed that the files were there in the "Masters" folder but Aperture was saying it was missing. When I tried to relocate the original it fixed the one image but then started to break connections with other files and images.
This cannot be - are you saying, Aperture did relocate an original file, that it reported as missing?
The forum software seems to be working again today, so we could start again to try to get to the roots of your puzzling problem.
Or have you solved it by now? Then let us know please.

WRT54GS losing connection.

I have seen messages already regarding the WRT54GS and it losing connection. I have the same problem with one I purchased today.
It happens a few times an hour.
Connection to the internet is fine when plugged directly into the cable modem. When I use the router is when the problems start.
I have upgraded the firmware and it has not helped in the slightest.
Has anyone actually got a working solution? If not then I'm getting a refund tomorrow.

I have been having the same issues with my router lately. It is a Linksys BEFW11S4 - Wireless-B Broadband Router. It has the latest firmware and everything which was from like, April of 2005 since this is an older router model. I've had it for about 3 years now and have had no problems until this past week. I have Verizon DSL. Anyway, my network connection seems to fail every so often at least 6 times a day at random times. I use WEP security encryption and everything. Every time it fails, I have to reset the router and go into administrator configurations and retype the password then it starts working again. But it is annoying since I just lose connection for no reason when I'm in the middle of something. Even when it fails, it does not indicate that I lost connection or that my connection is weak. It says that the signal is still excellent all the time even when it stopped working and the Internet light is still on. Odd. Does anyone have any idea what is wrong or is it time for me to buy a Wireless-G router instead and hope that fixes the problem? Again, I have had no issues with the router and it has been working great for nearly 3 years until this past week and I did nothing to mess with it. Maybe is it just that the hardware is worn-out? I dunno, I just want this problem solved. I'm glad that I'm not the only one with this issue.

Windows 8 keeps losing connectivity

Hi, not sure if this is unique but for the past few weeks Windows 8 has been losing connectivity every few minutes when browsing web pages, playing games etc. I am sure it's windows 8 as I have another work laptop using XP that I can be on all day via a
VPN and that does not drop at all (it would normally drop within a few seconds of losing connectivity). I've done a lot of searching on the net for the same issue, others seem to be having similar things happen such as slow speed but can't find anything that
matches, hence this separate question.
I have also tried swapping routers to no avail. The thing is, you wouldn't know anything had happened from the network connectivity. Suddenly a page won't load. The wireless connectivity at the bottom right of the screen shows a full 5 bars (not limited
connectivity). The way to get it back again is to leave it for a few minutes or disconnect from the router and reconnect again. Even whilst typing this I have had to do that twice.
I'd appreciate some suggestions!
Many Thanks, Paul.
PS... IPCONFIG/ALL shows...
Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.
Wireless LAN adapter Local Area Connection* 17:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Microsoft Hosted Network Virtual Adapter
#3
   Physical Address. . . . . . . . . : 56-DE-2B-64-0B-25
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter WiFi 2:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Qualcomm Atheros AR5B125 Wireless Network
Adapter
   Physical Address. . . . . . . . . : 74-DE-2B-64-0B-25
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.0.4(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 11 May 2013 10:31:15
   Lease Expires . . . . . . . . . . : 12 May 2013 10:31:21
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DNS Servers . . . . . . . . . . . : 194.168.4.100
                                       194.168.8.100
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Broadcom NetLink (TM) Ethernet
   Physical Address. . . . . . . . . : DC-0E-A1-07-A8-F0
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.{A319BEA5-A55C-4E0C-AF67-922BEBD4C7BB}:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 13:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:9d38:953c:3483:1732:adda:66e3(Pref
erred)
   Link-local IPv6 Address . . . . . : fe80::3483:1732:adda:66e3%14(Preferred)
   Default Gateway . . . . . . . . . : ::
   DHCPv6 IAID . . . . . . . . . . . : 436207616
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-28-39-CC-DC-0E-A1-07-A8-F0
   NetBIOS over Tcpip. . . . . . . . : Disabled

Hi,
Does this issue occur with both wireless and wired?
I suggest to perform these tests to troubleshoot the issue:
1 Update NIC card for your machine
2 Temporary disable firewall and antivirus program
3 Logon with Safe Mode with Networking
4 Update framework for your router.
Leo Huang
TechNet Community Support

Been losing connection for magic mouse and wireless keyboard

When I have my MBP running Mavericks in clamshell mode, I lose connections to both magic mouse and apple wireless keyboard in clamshell mode. I've tried all the PRAM SCM, aluminum foil and paper tricks. What I then did was test what happens when I leave the MBP open rather than in clamshell mode and it appears to avoid losing connection, at least that is what I've concluded with Mavericks for now..... anyone else able to replicate this? Having to leave the MBP open is not ideal.

Barry, thanks, still not working. I've tried every thing I can think of or have read, what I'm concluding is that there is either a problem with Mavericks or something has changed on how bluetooth works in Mavericks. Did not have this problem for the last 4 years. I can reproduce the problem when I close the laptop. I had the Bluetooth and wireless card checked out and replaced about 3 weeks ago. Problem has continued.

External drive conntected to Time Capsule keeps losing connection

I've been having this problem since I bought my TC over one year ago. Other than this everything works fine (aside from the occasional need for a restart).
I have an external 500GB drive attached to my 500GB TC via usb. I use the TC strictly for backups and the other drive to host my media files. When I want to use those files I switch on the drive. Only about half of the time does that work. When it does work everything is fine. I see the drive in the finder as expected.
When it doesn't work, I can see the drive name in the finder. But if I click to go into the folder, I get an error saying that the connection cannot be found.
It shows up in the Airport Utility as normal.
Powering the drive off and on does not help.
Relaunching the finder doesn't help either.
The only way I can connect to the drive again is to either logoff and log back into my mac, or restart the TC.
It seems that my computer is remembering some kind of network disk mounting settings that don't get refreshed when I turn on the drive, but then do get refreshed when I logoff and back in. Does anyone know how I could force that refresh to happen? Has anyone had this problem before?
Any suggestions would be much appreciated
PS all my software and firmware are the latest.
Thanks.

OS X fan
This helped meRe: Time Capsule keeps losing connection in Finder
Dec 17, 2013 4:08 AM (in response to whootang12)
Left click on the Finder icon from the Dock and click "Connect to server...", go to recent server and click on your Airport Time Capsule.
THANK YOU!!!!
This solved it for me!

LaCie external hard drive keeps losing connection to Windows 8.1 computer

Hello all,
My LaCie external hard drive (Rugged version) seems like it keeps losing connection to my brand new Windows 8.1 laptop. The laptop is an HP Pavillion 15-p 133cl TouchSmart Notebook which I just got today. Basically, every few minutes, or if I nudge the external
a bit, the computer will seem like it disconnected and reconnected to the external hard drive in a split second and bring it up in the Windows Explorer. This external hard drive doesn't show any problems connecting to any other computer, but it has occurred
with 2/3 ports on this computer so far. I'm a bit worried, because I definitely DO NOT want the files on this external to get corrupted in any way. What should I do? Thanks a bunch.

may I know your external HDD model, to check which USB version to isolate power and cable connection issue
if this is USB 3.0 try to attached at USB 3.0 at your laptop, your laptop has 2 USB 3.0 and 1 for 2.0, for external HDD with USB 2.0 sometimes need more power / more than 1 connection, sometimes the power will loose
but since the trigger it will disconnect if you nudge the HDD, I suggest back up data to your laptop first, try to change with other data or power cable, try also update your laptop chipset
try to check with other device to isolate port issue
may I know if you are using other PC, did your external HDD also will disconnect if you nudge it?
contact your external HDD manufactured to get some suggestion

Randomly losing connectivity

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