I recently inherited a client that must upgrade their servers. This is a small business, about 50 computers.
The network consists of three domain controllers - two Windows 2012 servers and one Windows 2003 server. Ultimately, I want to introduce a Windows 2019 server/DC
All rolls were moved to the other DC's. (FSMO, DNS, etc.)
Last weekend I was about to demote the 2003 DC, but luckily I discovered a huge problem. It seems FRS (File Replication) never occurred between the 2003 DC and the 2012's! On both of the 2012 DC's the SYSVOL and NETLOGON folders didn't even exist.
I am with the understanding that I must get this to replicate in order to demote this old server.
I've done basic troubleshooting, making sure that DNS is configured properly. I recreated the SYSVOL and the NETLOGON shares on the 2012 DC's with this registry procedure (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters ), I read articles about NULL entries but could not find any in ADSIEDIT.
I see another procedure to rebuild the SYSVOL objects using the BurFlags registry key D4 or D2. But it says "use this as your last resort."
So, at this point I'm looking for some direction as I don't want to do anything and risk making it worse. Anyone have any experience with this?