Resetting the Active Directory computer object
In Active Directory,
computer objects are derived from user objects. Some attributes
associated with a computer object cannot be restored when you
restore a deleted computer object unless the attributes were saved
through schema changes when the computer object was originally
deleted. Because computer object credentials change every 30 days,
the credentials from the backup may not match the credentials
stored on the actual computer.
When a computer object is
restored it is disabled if the userAccountControl property was not
preserved in the deleted object.
You must use the
Microsoft Active Directory Users and Computers application to reset
a computer object.
To reset a computer object's account
Remove the computer from
Re-join the computer to
the domain. The SID for the computer remains the same since it is
preserved when a computer object is deleted. However, if the
tombstone expired and a new computer object was recreated, the SID
will be different.