Forum Discussion

Copper Contributor

Nov 13, 2024

Upgrading a Server 2012 R2 to 2025

Hi everyone, sadly I was unable to locate any kind of search feature so I apologize in advance for potentially repeating this question. I have an old VM with Server 2012 R2 with a self contained AD...

Active Directory

Windows Server

LoganG925

Copper Contributor

Nov 16, 2024

I've tested it and it works. Make sure your server 2012 R2 has windows updates installed. In my test envronment, a fresh install of 2012 R2 failed early on in the windows server setup.exe process. Type 1 and Type 2 VM's both tested working. You absolutely can in place upgrade 2012 R2 to 2025. It works in Hyper-V and I would assume bare metal. Microsoft states that you can and it's true. That's the only part of the equation I can confirm for you.

JustusW

Copper Contributor

Dec 05, 2024

So, I'm sadly still stuck here. I have the whole thing running on Hyper-V on an up to date Windows 11 Host. The base operating system Server 2012 R2 has been updated to the latest patches including all optional patches.

The licensing status of the Server 2012 R2 is "activated". Is there anything else that might pertain to the issue?

I get the normal procedure up to accepting the EULA but then it only offers me the "Save nothing" option, with the "keep data" option unselecetable.

As mentioned before there is a OneIdentity Manager installed, this is using MSSQL Server 2012 Developer Edition. Is it possible that, or the AD/DNS is preventing the upgrade?

Kind regards,

Justus