Server 2012 R2 Active Directory delegation and access

May be a simple question...
In my company I have installed a backup domain controller on hyper-v for IT administration. All I want the IT admin guy to do is create users, modify their password and join clients to domain. He should not be allowed to change group memberships, or tweak
group policies.
I understand the delegation process - using the wizard I assigned the tasks create/delete/change password and join domain. Als created a policy that allows IT admins to login to this backup domain controller.
However since the IT admins are just domain users, they are unable to open dsa.msc without providing a admin password. If i make the users Member of "Account Manager" then they are able to open the dsa after providing credential but can also change
the group permissions.
How can I implement this lock down in my environment?

Thank you so much guys. So I demoted the computer, and installed RSAT. Now the IT Managers can log onto the machine. Although had to maually set the delegation permissions (The wizard kept giving full rights on a particular condition, will discuss more on
this when i find out whats happening)
I have another problem though ..
So we have an OU: Employees, Inside the OU: I have created many template user accounts, such as Sales.Test, Service.Test, etc.
The idea is to allow IT admins to create new users by copying these templates, so that proper group association are set. However, since, I have not allowed the IT admins to change group associations, the copying fails in the end with error: cannot add user
xxx to group yyy.
Any suggestions?
-- The groups are in a seperate OU, it will be also be okay if the IT admins can change associations for selected. groups..
Why don't you simply use the Powershell method I already shared in the Wiki? That way, you should not be facing these problems.
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
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Similar Messages

Windows 2008 Server - Cannot run Active Directory Users and Computers

Hi,
I am running Windows 2008 Server with latest windows updates installed. Directory Services Role also.
I attempt to open Active Directory Users and Computers tool and I get a;
Microsoft Visual C++ Runtime Library error;
"The Application has requested the runtime to terminate it in a unusual way. Please contact the application's support team for more information"
I click ok, then get the following debug info;
Problem signature:
Problem Event Name: APPCRASH
Application Name: mmc.exe
Application Version: 6.0.6001.18000
Application Timestamp: 47919524
Fault Module Name: msvcrt.dll
Fault Module Version: 7.0.6001.18000
Fault Module Timestamp: 4791ad6b
Exception Code: 40000015
Exception Offset: 0000000000029b06
OS Version: 6.0.6001.2.1.0.272.7
Locale ID: 3081
Additional Information 1: 43aa
Additional Information 2: cf3a46656318492c1997480001b6b0e0
Additional Information 3: 3837
Additional Information 4: 92f72e0d0589ff77cef51e0a413aeff6
Read our privacy statement:
http://go.microsoft.com/fwlink/?linkid=50163&clcid=0x0409
If someone could please assist, it would be very much appreciated.
Regards
B

Hi,
To solidly troubleshoot this kind of issue, we need to debug dump file. A suggestion would be to contact Microsoft Customer Service and Support (CSS) via telephone so that a dedicated Support Professional can assist with your request.
To obtain the phone numbers for specific technology request please take a look at the web site listed below:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;OfferProPhone#faq607
However, I am also glad to share my research.
Some third party applications may lead to this error. Please check if you install other third party applications on Windows server 2008?
Also, please follow the article below to perform necessary steps to see how it's going?
FIX: You receive an "invalid page fault in module MSVCRT.DLL" error message after you install the run-time libraries from Visual C++ 6.0
http://support.microsoft.com/kb/190536/en-us
Hope this helps.
Best wishes
Morgan Che

New Server 2012 install - Active Directory not working properly

We recently converted from 2003 to 2012. Our 2012 R2 server seems to be running fine. We did a DCPROMO on the OLD 2003 DC just fine but now there are all sorts of odd errors (Sharepoint can't authenticate users, Can't run Exchange 2013 on another 2012 server
because it can't find AD, etc.)
on the DC we have a Group Policy error 1096. "Group Policy Object LDAP://CN=User,cn={2B476B3E-2749-4B1B-8EC1-F5672A66F94F},cn=policies,cn=system,DC=mydom,DC=local\\mydom.local\SysVol\mydom.local\Policies\{2B476B3E-2749-4B1B-8EC1-F5672A66F94F}\User\registry.pol"
So far I haven't found anything on how to fix this (and the AD itself.) There are some errors in the DCDIAG log, too:
      Starting test: NetLogons
         Unable to connect to the NETLOGON share! (\\ISD-DC1\netlogon)
         [ISD-DC1] An net use or LsaPolicy operation failed with error 67,
         The network name cannot be found..
Starting test: FrsEvent
         There are warning or error events within the last 24 hours after the
         SYSVOL has been shared. Failing SYSVOL replication problems may cause
         Group Policy problems.
Any suggestions how we can fix these errors are greatly appreciated!

Hi,
Did you migrate the Active Directory from Windows server 2003 to Windows server 2012?
Please refer to this article:
https://blogs.technet.com/b/canitpro/archive/2013/05/27/step-by-step-active-directory-migration-from-windows-server-2003-to-windows-server-2012.aspx
Regards.
Vivian Wang

Upgrade from Windows Server 2012 Active Directory to Windows Server 2012 R2 Active Directory

We are currently running Windows Server 2012 Active Directory and would like to upgrade to Windows Server 2012 R2 AD. Is it OK to just do an in-place upgrade, or is it advisable to build new domain controllers on R2? Are there any guides or articles anyone
can recommend?

Hi Ginandtonic,
To upgrade DC(Domain Controller) from windows server 2012 to windows server 2012 r2, please refer to these articles:
Upgrade from windows Server 2012 to 2012 R2
Upgrade Active Directory from 2012 to 2012 R2
I hope this helps.
Best Regards,
Anna

SBS 2008 to Server 2012 R2 Active Directory Migration

Is there a tool that i can use to migrate Active Directory from SBS 2008 to Server 2012 R2?

There is no special tool for your situation. While there is a tool called ADMT that you may see mentioned if you search enough, it isn't really well suited for what you want.
With that said, there is also no *need* for a tool as I've already said. Nor do you need to recreate the users and have mismatched SIDs. You will add the 2012 machine to your existing domain and make it a domain controller. Yes, that means you will have
two DCs (for a time.) This is how larger organizations handle multiple DCs all the time, and they obviously don't go and create the same user on each DC. That is where the domain replication comes in. Your new server will be a DC and will replicate
all of the users *and* SIDs from the existing SBS server.
Then, when you are ready, you decommission the SBS 2008 server gracefully and the new 2012 server becomes your sole DC, but has AD completely intact. It is a tried and true practice, both within and outside of the SBS world, and has been done many many times.

Server 2012 restrict active directory dynamic ports

Hello,
Has anyone encountered issues with restricting the Active Directory dynamic ports for Netlogon and NTDS in Server 2012? I have followed the added the typical registry entries as described below but I still see my RDS gateway in the DMZ trying to communicate
to my internal DC over other ephemeral ports (49158). I have rebooted the DC after the registry changes and still no effect. Are the reg entries the same in 2012? Any help would be appreciated. Thank you
Registry key 1
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTDS\Parameters
Registry value: TCP/IP Port
Value type: REG_DWORD
Value data: 49152 (This value needs to be specified in decimal format)
Registry key 2
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters
Registry value: DCTcpipPort
Value type: REG_DWORD
Value data: 49153 (This value needs to be specified in decimal format)
Eddie Espino | Secure Data Solutions | Miami, Florida | Microsoft Partner

Hi,
There are at least two options that can be used to allow replication when there are network traffic filters (aka firewall) in the network, across two DCs:
1. Use registry keys on the DCs to force communication over specific ports
2. Use IPsec to restrict the traffic to two ports only (IP 50 and IP 51)
I tried to find some relevant documents, but could not find support for restricting the Active Directory dynamic ports for Netlogon and NTDS in Server 2012. You could refer to the following article, it may help you to solve your issues:
Restricting AD Replication Traffic between DCs to only a few ports
http://blogs.technet.com/b/luistog/archive/2012/05/08/restricting-ad-replication-traffic-between-dcs-to-only-a-few-ports.aspx
Regards,
Mandy Ye

Server 2012 Essentials Active Directory users

I am in the process of setting up a small business with 40 users and 12 workstations, most of the users will be working in a client site on they workstation and some will have access to anywhere access. I'm aware of essentials limited to 25 users, my question
is can I only create 25 AD accounts or can I create 40, as all 40 users will not require concurrent access at sny given time?

Hi,
à
when you say Essentials role experience is included, does this include Remote Anywhere feature in Essentials?
The Windows Server Essentials Experience role is available in Windows Server 2012 R2 Standard and Windows Server
2012 R2 Datacenter. When you install the Windows Server Essentials Experience role, you can take advantage of all the features that are available to you in Windows Server 2012 R2 Essentials without the locks and limits enforced in it. Windows Server Essentials
Experience role enables you to
use the Anywhere Access functionalities on the server (such as Remote Web Access and virtual private networks) to access your server, network computers, and data from remote locations in a highly secure manner. For more details, please refer to following article.
Windows Server Essentials Experience Overview
For configuring Anywhere Access functionalities in Windows Server Essentials, please refer to following article
and check if can help you.
Manage Anywhere Access in Windows Server
Essentials
By the way, if only have Windows Server 2012 Essentials, there are two scenarios in which Windows Server 2012
Essentials can be used in environments with more than 25 users. For more details, please refer to following article.
Using
Windows Server 2012 Essentials with more than 25 users
However, as Cliff and diramoh suggested,
Windows Server 2012 R2 Standard with the Windows Server Essentials Experience role installed will be a better option.
If anything I misunderstand or any update, please don’t hesitate to let us know.
Hope this helps.
Best regards,
Justin Gu

Active directory users and computers wont start on a dc, "the server is not operational"

In our environment, we have 3 dc's
two which run server 2008 (they work perfectly)
and one never off branch dc that runs server 2008 r2.
We have been having some problems where we feel the replication isnt up too speed(stuff could take up to 24 hours to replicate) and now when i tried opening active directory users and computers i am met with this error window:
We have a third party DNS solution.
How do i troubleshoot this issue?

dc01 (which replicates perfectly with dc02, and vise versa)
dcdiag /test:dns
C:\Users\adminuser>dcdiag /test:dns
Domain Controller Diagnosis
Performing initial setup:
Done gathering initial info.
Doing initial required tests
Testing server: Hostingpartner\ourdc01
Starting test: Connectivity
......................... ourDC01 passed test Connectivity
Doing primary tests
Testing server: Hostingpartner\ourdc01
DNS Tests are running and not hung. Please wait a few minutes...
Running partition tests on : ForestDnsZones
Running partition tests on : DomainDnsZones
Running partition tests on : Schema
Running partition tests on : Configuration
Running partition tests on : int
Running enterprise tests on : int.domain.com
Starting test: DNS
Test results for domain controllers:
DC: ourdc01.int.domain.com
Domain: int.domain.com
TEST: Delegations (Del)
Error: DNS server: ourdc02.int.domain.com. IP:xx.xx.xx.32 [Broken delegated domain domaindnszones.int.domain.com.]
Error: DNS server: ourdc02.int.domain.com. IP:xx.xx.xx.32 [Broken delegated domain forestdnszones.int.domain.com.]
Summary of test results for DNS servers used by the above domain controllers:
DNS server: xx.xx.xx.32 (ourdc02.int.domain.com.)
2 test failures on this DNS server
Delegation is broken for the domain domaindnszones.int.domain.com. on the DNS server xx.xx.xx.32
Delegation is broken for the domain forestdnszones.int.domain.com. on the DNS server xx.xx.xx.32
Summary of DNS test results:
Auth Basc Forw Del Dyn RReg Ext
Domain: int.domain.com
ourdc01 PASS PASS PASS FAIL n/a PASS n/a
......................... int.domain.com failed test DNS
dcdiag on dc01(which can replicate with dc02)
C:\Users\adminuser>dcdiag
Domain Controller Diagnosis
Performing initial setup:
Done gathering initial info.
Doing initial required tests
Testing server: hostingpartner\ourdc01
Starting test: Connectivity
......................... OURDC01 passed test Connectivity
Doing primary tests
Testing server: hostingpartner\ourdc01
Starting test: Replications
[Replications Check,OURDC01] DsReplicaGetInfoW(PENDING_OPS) failed with error 8453,
Win32 Error 8453.
......................... OURDC01 failed test Replications
Starting test: NCSecDesc
......................... OURDC01 passed test NCSecDesc
Starting test: NetLogons
[OURDC01] User credentials does not have permission to perform this operation.
The account used for this test must have network logon privileges
for this machine's domain.
......................... OURDC01 failed test NetLogons
Starting test: Advertising
......................... OURDC01 passed test Advertising
Starting test: KnowsOfRoleHolders
......................... OURDC01 passed test KnowsOfRoleHolders
Starting test: RidManager
......................... OURDC01 passed test RidManager
Starting test: MachineAccount
......................... OURDC01 passed test MachineAccount
Starting test: Services
......................... OURDC01 passed test Services
Starting test: ObjectsReplicated
......................... OURDC01 passed test ObjectsReplicated
Starting test: frssysvol
......................... OURDC01 passed test frssysvol
Starting test: frsevent
......................... OURDC01 passed test frsevent
Starting test: kccevent
......................... OURDC01 passed test kccevent
Starting test: systemlog
An Error Event occured. EventID: 0xC0002719
Time Generated: 04/04/2013 15:04:29
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC0002719
Time Generated: 04/04/2013 15:04:50
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC0002719
Time Generated: 04/04/2013 15:10:56
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC0002719
Time Generated: 04/04/2013 15:11:17
(Event String could not be retrieved)
......................... OURDC01 failed test systemlog
Starting test: VerifyReferences
......................... OURDC01 passed test VerifyReferences
Running partition tests on : ForestDnsZones
Starting test: CrossRefValidation
......................... ForestDnsZones passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... ForestDnsZones passed test CheckSDRefDom
Running partition tests on : DomainDnsZones
Starting test: CrossRefValidation
......................... DomainDnsZones passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... DomainDnsZones passed test CheckSDRefDom
Running partition tests on : Schema
Starting test: CrossRefValidation
......................... Schema passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... Schema passed test CheckSDRefDom
Running partition tests on : Configuration
Starting test: CrossRefValidation
......................... Configuration passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... Configuration passed test CheckSDRefDom
Running partition tests on : int
Starting test: CrossRefValidation
......................... int passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... int passed test CheckSDRefDom
Running enterprise tests on : int.domain.com
Starting test: Intersite
......................... int.domain.com passed test Intersite
Starting test: FsmoCheck
......................... int.domain.com passed test FsmoCheck
The problematic dc03:
Dcdiag gives the same output as dcdiag /test:dns
C:\Users\adminuser>dcdiag
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
Home Server = OURDC03
Ldap search capabality attribute search failed on server NTSDC03, return
value = 81
We have an infoblox dns server on ip address xxx.y.y.251.
first error in event logs on dc03:
error 1863
This is the replication status for the following directory partition on this directory server.
Directory partition:
CN=Configuration,DC=int,DC=domain,DC=com
This directory server has not received replication information from a number of directory servers within the configured latency interval.
Latency Interval (Hours):
24
Number of directory servers in all sites:
2
Number of directory servers in this site:
2
The latency interval can be modified with the following registry key.
Registry Key:
HKLM\System\CurrentControlSet\Services\NTDS\Parameters\Replicator latency error interval (hours)
To identify the directory servers by name, use the dcdiag.exe tool.
You can also use the support tool repadmin.exe to display the replication latencies of the directory servers. The command is "repadmin /showvector /latency <partition-dn>".
i have also go several warning 2088, 2093, 2087.
And errors 1863 pointing to different directory partitions like schema/configuration/domaindnszones/forestdnszones

Not able to open active directory user and computer in windows server 2008r2

Hi All techies,
i would like to know one issue which i am facing mostly, i have created 5 virtual machine all with window server2008r2 and one windows 7 on vm-ware now when ever i start my virtual machines everything going rite but when i try to open active directory user/
computer or domain and trust i get a following error "data from active directory user and computers is not available from dc(null) bcoz unspecified error" even when i chk in events log its give me no help, and after 15-30 min everything works good
Please let me know the cause of it and really appreciate it .
Thanks
Atul

You need to ensure that
1. group policy that says "wait for network before logon" is applied to all computers including servers and workstations is applied
2. DNS record exists for all DCs in DNS
3. If there are multiple Domain Controllers in Forests, then they point them as secondary DNS server. This way they will be able to resolve IPs if local DNS server service takes time to start.
As Chris mentioned, you need to start all DCs first, give a time of 5 minutes and then start member servers and workstations for successful logon.
- Sarvesh Goel - Enterprise Messaging Administrator

Hide all except one object in Active Directory Users and Computers.

Hello,
I have a question.. I need to allow to one group of "administrators" creating users in one OU and adding computers to the domain, nothing else. I allowed them to log on DC using the GPO "Allow log on locally", because I don't want to give
them administrator rights, I allowed them to do these operations on one OU through delegation wizard and now I need to make all OUs, groups etc. invisible to them except this OU. What is the best way how to achieve this? Thank you...
d.

I would disable the ability to allow them to login. I suggest to create a Computers OU that you can delegate to the "admins" to add computers, and don't use the default Computers container.
I assume the admins are using Windows 7 or newer. You can customize an RSAT installation to just provide the ADAC.
Description of Remote Server Administration Tools for Windows 7:
http://support.microsoft.com/default.aspx/kb/958830
Remote Server Administration Tools for Windows 7:
http://technet.microsoft.com/en-us/library/ee449475(WS.10).aspx
Remote Server Administration Tools for Windows 7
http://www.microsoft.com/downloads/details.aspx?FamilyID=7D2F6AD7-656B-4313-A005-4E344E43997D&displaylang=en
Customizing - Installing Remote Server Administration Tools (RSAT) for Windows 7
http://www.petri.co.il/remote-server-administration-tools-for-windows-7.htm
Or if you want to chop it down and control it further, create a custom ADUC with just that OU you've delegated. I've done this in the past and worked fine for my customer:
Delegate an Organizational Unit (OU) in Active Directory Users and Computers (ADUC), then create a custom MMC or customized RSAT
http://blogs.msmvps.com/acefekay/2014/09/04/delegate-an-organizational-unit-ou-in-active-directory-users-and-computers-aduc-then-create-a-custom-mmc-or-customized-rsat/
Ace Fekay
MVP, MCT, MCSE 2012, MCITP EA & MCTS Windows 2008/R2, Exchange 2013, 2010 EA & 2007, MCSE & MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
Complete List of Technical Blogs: http://www.delawarecountycomputerconsulting.com/technicalblogs.php
This posting is provided AS-IS with no warranties or guarantees and confers no rights.

Windows Server 2008 R2 - Active Directory Replication over DynDNS

Hello,
I have one server that Windows Server 2008 R2 - Active Directory / DNS
Now some users shifted to new office with the server
Some users still in the original place that now don't have ADDS/DNS
i want to install one replication server in the original place to retrieve AD/DNS form new office via DynDNS
is that possible of not?
Best regards,

Badr, I don't think you want AD replication occurring over the internet - even if that was possible the server would need access to all the SRV records, a records, And all the ports required for communication - See here for an exhaustive list
http://social.technet.microsoft.com/wiki/contents/articles/584.active-directory-replication-over-firewalls.aspx - I don't think I have to tell you how bad opening all these ports to the internet would be.
You may want to look at Setting up a vpn or DirectAccess from the original site to the new site. This will give you more security and generally won't cost to much.
http://technet.microsoft.com/en-us/network/dd420463.aspx
Another thing that may work for you would be if you setup remote desktop services in the new location and had the original location remote into via a gateway server -
http://blogs.technet.com/b/windowsserver/archive/2012/05/09/windows-server-2012-remote-desktop-services-rds.aspx as a starting point. With RDS your users would be able to access the new location from anywhere, although there would be upfront costs associated,
licensing and server being part of them - I don't recommend turning your domain controller into an RDS server.These are just some ideas to help you with your issue

How to create "folders" in Active Directory Users and Computers?

Hello Community
    In Windows Server 2008R2 when you go to Active Directory Users and Computer
you will see icons of folders such as:
    - Builtin has a folder icon
    - Computers has a folder icon
    - ForeignSecurityPrinicpals has a folder icon
    - Domain Controller as a folder icon
    - Managed Service Accounts has a folder icon
    - Users has a folder icon
    All of the above folders are visually identical.
    If you right click and select “File” – “New”
on any of the selections the icon
will not look like the folder icon they have their own icons which look different
from the "Folder" icon.
    I would like to create a “Folder” that looks just visually exactly like the ones
mentioned above, how can I create those types of Folders in Active Directory User
and Computers?
    Note: I would like to put users in the folders.
    Thank you
    Shabeaut

Hi,
you should use OUs (an OU is they type of object (folder) that is available for you to easily create.
The object type you are asking about is a "container", and there are various reasons why an OU is more flexible (applying GPO, etc).
Refer: Delegating Administration by Using OU Objects
http://technet.microsoft.com/en-us/library/cc780779(v=ws.10).aspx
and the sub-articles:
Administration of Default Containers and OUs
http://technet.microsoft.com/en-us/library/cc728418(v=ws.10).aspx
Delegating Administration of Account and Resource OUs
http://technet.microsoft.com/en-us/library/cc784406(v=ws.10).aspx
Also: http://technet.microsoft.com/en-us/library/cc961764.aspx
Don
(Please take a moment to "Vote as Helpful" and/or "Mark as Answer", where applicable.
This helps the community, keeps the forums tidy, and recognises useful contributions. Thanks!)

Can't connect to Small Business Server 2003 via Active Directory

I have done lots of searching, both in these forums and the wider internet, and cannot find a solution to my specific problem.
I am trying to connect my G5 (10.3.9) to a Windows network. We have a Microsoft Small Business Server 2003 with Active Directory. The PCs have no problem using this, and I can connect to shares setup on the server via AFP.
But I am having problems when I try to configure the AD plug-in in Directory Access on the Mac. When I click 'Bind', I enter the Server's Administrator username & password and when I click 'OK', it gets to Step 3 of 5 "Verifying Credentials". It ticks away at this step for about 30 seconds, then comes up with error message saying "Invalid user name and password combination."
I have tried other users with admin privileges, but they don't work either. I know the usernames and passwords aren't invalid, because I created them. I have tried fiddling around with other settings in the AD setup, but nothing gets any further.
Without any other 3rd party software (that's my final option), is there something I need to check/change, either on the Mac or the server, to make this Mac to authenticate via AD? Please help!

Hi Andbrowny, thanks for your response.
Your advice didn't really help my Active Directory problem (AD doesn't require SMB does it?), but it gave me some progress on my SMB problem. I can connect via AFP, but previously when I tried to connect via SMB, it kept coming up with the error "Could not connect to the server because the name or password is not correct".
Now, after changing the policies on the server, I get an error -43 message saying "The operation could not be completed because one or more required items cannot be found."
So now I have two problems! SMB is not finding something it needs, and Active Directory is not "verifying credentials".
Actually, I have three problems: When I am connected via AFP, filenames over 31 characters long are truncated on the server, and I can't copy long filenames onto the server without renaming them. I have read that SMB would fix this to a degree (256 characters for the complete file path), but is there anything (a protocol or software) that allows long filenames to be read/written with ease?
Side note: The server is not 100% configured, the bloke installing it still has some work to do, but Active Directory works for all the XP machines, and I can connect to each XP workstation with SMB.

Directory Security Strange Permissions Issues (Windows Server 2003 running Active Directory)

I have a user that all of a sudden was not able to open 70% of her files located on a file server, Windows Server 2003 running Active Directory, from her laptop. The same user can access all the same files from a different machine, logging on with the same
credentials. Just looking for a point in the right direction and a possible theory as what could cause this problem, an why all of a sudden. I did go back through the logs but nothing sticks out. For the most part the logs on the server and the laptop are
pretty clean.
Both machines are Latitude E5420s running Windows 7 Enterprise Service Pack 1. Both machines are 64bit and connect to the network via hard-wire, not wireless.
Thanks in advanced.
Grajek

I would recommend proceeding that way:
Check that your DCs are in a healthy state and AD replication is fine: It might be that the user is member of security groups and the membership is not getting replicated properly which can cause this random behavior. You can use
dcdiag and repadmin for checks and you can refer to my recommendations here: http://social.technet.microsoft.com/wiki/contents/articles/18513.active-directory-replication-issues-basic-troubleshooting-steps-single-ad-domain-in-a-single-ad-forest.aspx
Make sure that the file server is reachable from the user client computer. Start with
ping and nslookup. Also, you need to make sure that the traffic between the client and the server is not blocked or filtered. You might want to temporary disable security software for testing
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
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My MVP Profile

Can not open Active Directory Users and Computers

Problem Reported:
Out of the blue this has started happening:
When I go to "Active Directory Users and Computers" I get this message.
"MMC cannot open the file C:\WINDOWS\system32\dsa.msc.
This may be because the file does not exist, is not an MMC console, or was created by a later version of MMC. This may also be because you do not have sufficient access rights to the file.
Additional information:
This is a server that has been in use for 2+ years with active directory users that can and do login everyday.
As far as I know the system has no backup.
dsa.msc IS located in the system32 folder
I am using the administrator account.
OS:
Microsoft Windows Server 2003 R2
Standard x64 Edition
Service Pack 2
Please help with detail. Thank you.

Have you tried to uninstall ADUC administrative tool and re-install it again? If no, please give a try.
This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.
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Server 2012 R2 Active Directory delegation and access

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