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HELP!!!  Have a wierd issue occurring on my network with usernames.

Posted on 2011-09-19
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Last Modified: 2012-05-12
Hi, I am having a strange issue happening to my users, particularly, students.  Some have to capitalize the first character of their username before it will allow them to log into the domain computers.

It won't let me them login with all lowercase or all uppercase, but just the first character.  

Not all student's usernames are effected by this.  It seems to be random and just started happening.

I verified in the AD that the student's UPN (Full Name) of their user account object is the first character is uppercase and then some are all lowercase, so not sure if that plays a factor.

I was always under the impression that Windows environment the username is not case sensitive, only the password.  I know in a Unix / Linux environment that username is case sensentive.

Has something changed with Server 2008 R2 (ADDS) or Windows 7 Enterprise/Pro?

Does anyone have an idea what is causing this?

Thanks in advance.
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Question by:rsnellman
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Expert Comment

by:x-men
ID: 36560701
I think it has something to do with the kerberos authentication
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Author Comment

by:rsnellman
ID: 36560724
Would kerberos authentication have issues if the DC on the branch site, (where the students are having the issue) running Server 2003 x64, while our main site DC running Server 2008 R2?

Just not sure why this started happening.

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Author Comment

by:rsnellman
ID: 36560829
x-men,
How can I go about verifying if it is a kerberos authentication?  And how to fix the kerberos authentication issue, if it is that?

Thanks.
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by:x-men
ID: 36561083
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Author Comment

by:rsnellman
ID: 36562299
OK, now this is strange.  The accounts in question are now working with all lowercase for username.

Hmmmm...
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Expert Comment

by:x-men
ID: 36565804
with out any inte3rvention?
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Accepted Solution

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rsnellman earned 0 total points
ID: 36581459
Yes.  It is working fine now.  Not sure what the hiccup was, because I cannot duplicate the issue now.

Hmmm....
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Expert Comment

by:x-men
ID: 36586005
magic...
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Author Closing Comment

by:rsnellman
ID: 36895898
Problem went away on its own.  Could not replicate the issue.  Not sure what happened, but not certain the issue is completely fixed yet.
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