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JustusW's avatar
JustusW
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's avatar
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's avatar
JustusW
Copper Contributor
Dec 05, 2024

For some reason my reply is lost. I'm still stuck here sadly. I'm on Hyper-V, licensed active Server 2012 R2, MSSQL Server 2012 Developer Edition, AD/DNS but when I use the installer I cannot select the option to keep the previous install.

Regards,

Justus

  • byevjzts's avatar
    byevjzts
    Copper Contributor
    Dec 11, 2024

    Hi, this is likely due to the ISO you are using, if you use the Evaluation version you download from MS site directly this will only allow a reset install of 2025.

     

    You must obtain a retail or VLK edition of the ISO for an in-place upgrade (or when its available again, it will be released as an optional windows update)

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