Ah, that might explain things; the user display language is not always the same as the system language. I ran a test; i have vm with windows 10 that has Dutch date formatting and such (see just above the top drop-down: English with Dutch between parentheses) but display language in EN and timezone set to NL.
I took a snapshot and when i install the client it presents itself in English, just as expected. When i roll back to the snapshot, and switch the System Locale to Dutch like so:
reboot, and install the client, the client is still in English, perfect.
But when i do it “the proper way” and select Dutch as the display language:
and then
(btw this used to be only possible with Windows Pro/Enterprise, not sure if this is possible with “Home” versions). And i just assume the same behavior applies to Windows 11, but that is something for OP to find out.
Wait for it to install, sign out, confirm everything in windows (menus and such) are displayed in Dutch (note AFTER logon, and also note: some programs like firefox might still display English, they have their own settings).
And then install the current Urbackup Client which correctly preselects the installer language to Dutch:
And guess what? Its behaves exactly like it should:
(also when i hover over the tray icon the text presented is in Dutch).
So what i saw earlier (i have found it back: How to set the client language on Win 10) is not what i see happen now. Back then what i saw happen was basically at what i tried first here (everything was set to English, just formatting and timezone set to Dutch) is that the client presented itself in Dutch, which was quite annoying. But im done with Windows anyway and i dont have the client frontend on my Debian, i spend way too much time looking at the admin webpage anyway.
But fwiw: hope this helps OP: check if you have the display language preferences set to the same language you want the Urbackup Client to show up with. It could mean you need to reinstall the application if you change that afterwards, im not able to tell when that is set, i suppose in an ideal world that would happen dynamically but its a little effort.
Ok, im convinced its done the proper way Martin, ill follow up the other thread with a link to here, maybe that helps the other person too. Possibly things changed in the meantime, great stuff.