Users unable to connect to shared folders

I am supporting a 30 user network and a couple of users have called in that they can access Internet and e-mail (Exchange), but not their files. These workstations are XP Pro on an SBS 2008 server and have been running fine for 4 months.
We installed some patches and rebooted the server last night.
I did reset the user's computer account. When the user tries to get to a mapped folder she gets a message that "an error occurred while conneciton" the drive and the connection is already in use. When I try and access netlogon share to run the script directly the user is prompted to login and cannot.
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summit_pcguyAsked:
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Shreedhar EtteCommented:
Hi,

Check the Netlogon services is started or not on the server and desktop.

Also the File and Print is enabled on the NIC.

Are the desktops are able to logon to the domain?

Reboot one desktop and check. Still not resolved then dis-join and rejoin the desktop.

Hope this helps,
Shree
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lobo797Commented:
It takes a little time, but disjoining the domain and rejoining usually will solve those issues.
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summit_pcguyAuthor Commented:
I will check those items. Usually we do not see multiple people all having the same problem at once.
All automatic servies on the server are started including Netlogin. The server was just restarted. SAme problem.
Resetting the computer account on one XP machine has apparently locked it out of the domain. Looking to get access to another machine for testing. Many users use an web based LOB app which is working so this may be difficult.
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summit_pcguyAuthor Commented:
Users report they are able to login, access web, and EXchange e-mail. I am unsure whether they are using cached credentials or actually authenticating to AD. I wonder if a server patch installed last night may have caused a problem. All machineds except one are XP.
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Shreedhar EtteCommented:
What are the patch installed on the server?
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donciakasCommented:
Please check if the computers has no network drives connected. I would suggest using "net use" from command prompt
More about this command You can find http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/net_use.mspx?mfr=true
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summit_pcguyAuthor Commented:
The desktops all pull a script from the server. When looking at the one machine all the mappings were there - when you tried to access a mapping you receive the erorr that the drive is already mapped. Our script deletes each mapping and recreates it at logon.
That is why I tried to access the netlogon share to run the script at which point I was promtped for credentials.
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summit_pcguyAuthor Commented:
Patches installed on the server last night:
Update for the 2007 Microsoft Office System (KB981715)
Cumulative Security Update for Internet Explorer 8 for Windows Server 2008 x64 Edition (KB980182)
Update for Windows Server 2008 x64 Edition (KB973917)
Security Update for Windows Server 2008 x64 Edition (KB978338)
Security Update for Windows Server 2008 x64 Edition (KB978601)
Update for Microsoft XML Core Services 4.0 Service Pack 2 for x64-based Systems (KB973688)
Security Update for Microsoft XML Core Services 4.0 Service Pack 2 for x64-based Systems (KB954430)
Security Update for CAPICOM (KB931906)
Windows Malicious Software Removal Tool x64 - April 2010 (KB890830)
Security Update for Windows Server 2008 x64 Edition (KB980232)
Security Update for Microsoft Office Excel Viewer (KB978383)
Update for Internet Explorer 8 Compatibility View List for Windows Server 2008 x64 Edition (KB980302)
Security Update for Windows Server 2008 x64 Edition (KB979309)
Security Update for Windows Server 2008 x64 Edition (KB979683)
Security Update for Windows Server 2008 x64 Edition (KB981332)
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Shreedhar EtteCommented:
Hi,

Remove this hotfix "Security Update for Windows Server 2008 x64 Edition (KB980232)"

and check.

Hope this helps,
Shree
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summit_pcguyAuthor Commented:
Hi Shree. We have uninstalled "Security Update for Windows Server 2008 x64 Edition (KB980232)" and restarted the server.
On-site tech reports the same problem. He says that the machines are not seeing the domain. He has disjoined one machine and is trying in vain to get it re-joined.
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summit_pcguyAuthor Commented:
After 9 hours on the phone with Microsoft they discovered that  a Group Policy somehow got linked to the DC policy and was not allowing client connections. I have no idea now that happened, but that's what I am told the problem was. Everything is normal now. Thanks for trying to help!
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