Notes

One might ask why we use Windows 7 in 2022, but hey, we didn't manage to migrate some applications...

After migrating a Windows 7 computer to another Windows domain, it started to forget its default printer. It always set HP ePrint or Microsoft XPS Writer as default printer.

After doing some research, I removed everything related to printers from the following registry keys:

HKCU\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices
HKCU\Printers\Connections

After a reboot, the printers were reconnected using our group policies. And Windows finally remembered the default printer! I guess there were some old information which caused this behaviour.