Event ID - 7

Event Id7
SourceKDC
DescriptionThe Security Account Manager failed a DC (or a KDC) request in an unexpected way. The error is in the data field. The account name was ????O???????e and lookup type ax. Data: 0000: 34 00 00 c0 4..À
Event InformationAn available hot fix will solve this problem. Fore more information check the link given below.
Reference Links You Cannot Change Your Password After an Administrator Resets It

You cannot log on or you experience a long delay on a domain controller or on a member computer that is running Windows 2000, Windows XP, or Windows Server 2003

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