Log in to the domain controller from which you are trying to restore the database, run cmd
as Administrator and run the following:
- Type regsvr32 schmmgmt.dll
This command will register Schmmgmt.dll on your computer.
- Click Start, click Run, type mmc /a, and then click OK.
- On the File menu, click Add/Remove Snap-in, and then click Add.
- Under Available Standalone Snap-ins, double-click Active Directory Schema, click Close, and then click OK.
Next, open Active Directory Schema, find the attribute ObjectClass
, select Properties and check the Index this attribute
Apply the changes and back up the domain controller again.