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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...
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
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)