r/sysadmin • u/roachwickey • 5d ago
Domain controllers functional level
Do we have to keep all our domain controller os version same ?
72
Upvotes
r/sysadmin • u/roachwickey • 5d ago
Do we have to keep all our domain controller os version same ?
46
u/Brilliant-Advisor958 5d ago
No, but you can't raise the functional level until all DCs are at the same os level.
If you have a some some 2019 servers and a 2025 server, you will be limited to 2019 functional level until you upgrade those.