The schema cache load for the Active Directory® directory service could not convert the default security descriptor on the schema class object, and as a result the schema cache load will fail.
Sample Event:
The Active Directory schema cache load could not convert the default security descriptor on the following schema class object.
Security descriptor: %1
Schema class object: %2
As a result, the schema cache load will fail.
Additional Data
Error value: %3 %4
Verify that the default security descriptor on the schema class object is valid. If it is not valid, change it to a value that is valid.
For more information, see:
Microsoft Help and Support for Microsoft Windows Server 2008 and above
Microsoft Knowledge Base