Forum Discussion
Upgrade from 26040 to newer version stucks at check for updates
I've had the same issue, and posted about it over 2 weeks ago in the other thread: https://techcommunity.microsoft.com/t5/windows-server-insiders/build-26063-fails-to-install-due-to-setup-crash-hang/m-p/4069396
Unfortunately, it doesn't seem they care. I got no response, and it appears not to be fixed yet. This results in certain customers being unable to do any Windows Server insider preview build upgrades, despite already being on Server 2025 branding.
If it really only happens when trying to upgrade from 26040 to anything newer, which you say so, i wonder how to get out of this situation without losing the Server OS installation that im trying to upgrade. I don't want to have to reinstall over a bug like this. They should just fix the upgrade setup's compatibility/crash bug/hang.