Q: How can I check Active
Directory (AD) database
integrity?
A: You can use Ntdsutil to check the
AD database. You must have booted
into Directory Services Restore Mode.
(At boot time, press F8 and select
Directory Services Restore Mode.) Start
Ntdsutil. With Windows Server 2008
and later, you must first select an active
instance via the Activate Instance
NTDS option, which loads the directory
service; although, if others were present,
they could be activated instead.
Access the File Maintenance section
via the Files command, and run the
Integrity check. You can also perform
a Semantic check via the Semantic
Database Analysis module.
—John Savill
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