Synchronization failure can be caused by:

The Read-Only attribute could be set on %SystemRoot%\Netlogon.chg.
The %SystemRoot%\Netlogon.chg file could be corrupted.
The permissions for the System account on %SystemRoot%\Netlogon.chg is not Change or Full Control.

If the Netlogon.chg file has been corrupted:

Set the permissions so that the %SystemRoot%\Netlogon.chg file has No Access for the System account.

Restart the system and delete the file when prompted.

Restart again. The file will be recreated at startup.