Donna H
asked on
AD Account lockout
I have a user that is getting repeatedly locked out of his Active Directory account. I have checked his mobile phone and removed and re-added the exchange account with the correct credentials. I have run rundll32.exe keymgr.dll, KRShowKeyMgr -- and removed all cached credentials. I have deleted the cached passwords from Internet Explorer. I have checked for any mapped drives and I have removed and re-added the Outlook profile.
I h ave also downloaded and ran the lockoutexaminer. This shows the orig. lock as one of our domain controllers.
I have checked the security event log on the DC for event 4740 and it shows the lockout and the caller computer name is our Exchange server.
The lockouts started happening after the last password change. I also tried changing the password back to the original password,but that did not help either
The lockout appears to occur at regular 15 minute intervals.
Is there anything else I can check to find the source of the account lockout?
Thanks
I h ave also downloaded and ran the lockoutexaminer. This shows the orig. lock as one of our domain controllers.
I have checked the security event log on the DC for event 4740 and it shows the lockout and the caller computer name is our Exchange server.
The lockouts started happening after the last password change. I also tried changing the password back to the original password,but that did not help either
The lockout appears to occur at regular 15 minute intervals.
Is there anything else I can check to find the source of the account lockout?
Thanks
Perhaps searching the IIS logs on your Exchange server will point you in the right direction.Perhaps he has an iPad or some other thing configured and forgot. I would search the logs for his logon name and see what is trying to use ActiveSync.
ASKER
Thanks Shaun.
I ran the event comb but I didnt get any results. I am checking the rest of the solutions in your article.
I ran the event comb but I didnt get any results. I am checking the rest of the solutions in your article.
ASKER
Thanks Jeff,
I will try checking the IIS logs on the Exchange server.
I will try checking the IIS logs on the Exchange server.
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You could also try to install Network Monitor on your DC's unlock the account then start the captures as a last resort
ASKER
Shaun, I have enabled auditing on the client workstation and auditing is turned on for the DC and Exchange servers
ASKER
Compdigit,
ran psexec, results showed Currently stored credentials as * NONE*
ran psexec, results showed Currently stored credentials as * NONE*
https://www.experts-exchange.com/articles/29305/Active-Directory-Locked-Account-Investigation-Process.html