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Server 2003 Security premissions

Posted on 2014-03-27
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Last Modified: 2014-09-08
This week one of our 2003 box start to give errors when trying to assign folder premissions.
I can add new users and everything else seem ok, but if I try to assign premissions to folders, I get this error :

SECURITY
Unable to lookup user names for display.

Nothing changed on the server recently, no updates added, so I am kind of baffled by this error, Event viewer showing no errors or anything unusual.

It will allow me to search the AD for the users or type in manually to check names, but get the error when trying to OK it.
The other strange thing I can see is, when the user name are added to the list, it has this strange bit at the end.

So normally the name should show as John Smith, but now it is showing John Smith [000] (or something like 3 tiny characters in between) which is odd.

Any clues ? Thanks
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Question by:Combemartin
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Expert Comment

by:Mahesh
ID: 39961395
Is this domain controller ?

OR

Is this a file server ?
If it is file server, you can simply disjoin server from domain and rejoin again
OR
You can reset secure channel through nltest \ netdom utility on server and this do not require to disjon \ rejoin server to domain
May be file server secure channel with DC has been braked

Syntax to check secure channel:
nltest /server:<ComputerName> /sc_query:<DomainName>

The following command resets the secure channel for a computer:
nltest /server:<ComputerName> /sc_reset:<DomainName>

After running above commands check if it works

Mahesh.
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Expert Comment

by:weinberk
ID: 39964334
anything showing in the event log?
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Author Comment

by:Combemartin
ID: 39968871
Hi, nothing is showing in Events, I restarted the server and it worked ok for a bit then the same problem, I have noticed theres been a number of messages when trying to copy/move folders on the 2003 server that its out of memory, the server is a 2003x86 with 4GB, never had this problem before for the past three years, I ran the MS KB126962 and that seem to cured the memory problem, and so far everything else seems ok, but I am concerned as to what caused it.
Thanks
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LVL 15

Expert Comment

by:weinberk
ID: 39969146
Is it a domain controller?
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Author Comment

by:Combemartin
ID: 39974435
Yes, its a single domain, also running Exchange 2003, all patched.
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Accepted Solution

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Combemartin earned 0 total points
ID: 40302937
I reinstalled the server in the end.
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Author Closing Comment

by:Combemartin
ID: 40309441
No other solutions provided
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