&author.jelmer; &author.tridge; Finding useful information on windows Netlogon debugging output stop netlogon service on PDC rename original netlogon.dll to netlogon.dll.original copy checked version of netlogon.dll to system32 directory set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\DBFlag to 0x20000004 start netlogon service on PDC