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Event ID: 4015 Source: Microsoft-Windows-DNS-Server-Service

Level
Description
The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The extended error debug information (which may be empty) is "00002095: SvcErr: DSID-03210A6A, problem 5012 (DIR_ERROR), data 16". The event data contains the error.
Comments
 
ME969488 describes a situation when this event is recorded when running the Domain Name Service (DNS) role on a Read-Only Domain Controller (RODC) with the suggestion to move the DNS to a writable controller.

See also the comments for Event id 4015 from DNS (very similar with this).

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