When I go to systemsettings5 -> Printers, prompt to provide user password for whatever strange reason appears (I'm logged in already after all). Whenever I provide it, I'm notified I provided wrong password. All the time. I cannot do anything because of that and thus it renders this module useless. Reproducible: Always
Can you open a browser and go to http://localhost:631/ and see if administrating works there?
Hello. Yes, it does.
What credentials are you providing? This password is negotiated with CUPS server, so it depends on CUPS configuration to authenticate you or not (not just because you have logged in). If you provide root and password on the web interface it should work on the system settings module too.
Hello. You are right. By default, login name was provided, but root credentials are needed. Then it works. Feel free to close. Thank you.