Forum Discussion

optdoug's avatar
optdoug
Copper Contributor
Oct 06, 2025

Windows 2003 R2 to Windows 2012 R2

It's been a while since I have been on this site. But, I need some help on this one. I have inherited a network that consists of a Windows 2003 R2 server Domain Controller, a Windows 2012 R2 server D...
Account Management
community
Surya_Narayana's avatar
Surya_Narayana
MCT
Oct 07, 2025

hi optdoug​ It sounds like your SYSVOL and NETLOGON replication never migrated from FRS to DFSR, which is why the 2012 R2 DC isn’t showing those shares. Unfortunately, a direct migration from Windows Server 2003 R2 to 2012 R2 isn’t supported for SYSVOL replication — you’ll need an intermediate domain controller running at least Windows Server 2008 or 2008 R2 to handle the FRS-to-DFSR transition.

If you can’t get access to 2008 R2 media, you could:

Check with Microsoft Volume Licensing Service Center (VLSC) or Visual Studio Subscriptions (MSDN) — they still provide ISO access for legacy OS versions.

Temporarily deploy a Windows Server 2008 R2 evaluation copy (still available via official Microsoft links). You can use it to complete the migration and then decommission it once the SYSVOL replication is working.

Ensure backups and verify AD health (dcdiag, repadmin /replsummary) before introducing or demoting any domain controllers.

Once replication is stable, you can safely demote and remove the 2003 R2 server.

Resources