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Invalid Password Issue AD

Posted on 2009-07-06
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Last Modified: 2012-05-07
Hello All,

We are having an unusual issue with Active Directory. Intermittently users are receiving an invalid password dialog when attempting to authenticate. I have verified that the users are not typing in the wrong password or any of the basic mistakes that are made. The accounts are not locked out when this occurs and all DC's and GC's are available when this issue occurs. There are no errors in the event log as it is clean mosting informational events and no warnings or errors. Any help would be appreciated.

Thank You~
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Question by:ValleyENT
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Shabarinath Ramadasan earned 500 total points
ID: 24786673
Check if all the DCs on the local site are well synced.
I suspect one of your DC is not properly synced and whenever a request goes to that DC, its showing invalid DC.

As its difficult to identify from the user end - to which DC the authentication request will be going, I prefer using repadmin or replmon to confirm that the replication is fine.

If you are able to get on account lockedout after multiple entries, you can identify from which server the lockout is initiated.

Hope this helps.

Cheerio
Shaba
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by:ValleyENT
ID: 24786811
I rad repadmin and this was the output:

CALLBACK MESSAGE: The following replication is in progress:
    From: 0211cd83-d075-4b5c-ad17-23f8b0ecb234._msdcs.VENT.local
    To  : 8a939b17-3f1e-42d7-8606-373585f8cafb._msdcs.VENT.local
CALLBACK MESSAGE: The following replication completed successfully:
    From: 0211cd83-d075-4b5c-ad17-23f8b0ecb234._msdcs.VENT.local
    To  : 8a939b17-3f1e-42d7-8606-373585f8cafb._msdcs.VENT.local
CALLBACK MESSAGE: SyncAll Finished.
SyncAll terminated with no errors.
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