I realize this is not an auth request from NoMachine wanting to update; but they started popping up after I updated NoMachine (which I received NX’s normal ‘an update is available’ notification, not this.)
I un-installed NoMachine for a couple days and they went away. Re-installed NoMachine and they came back. I’m just wondering if anyone else has been getting something like this and if so to perhaps figure out what has caused it to start.
(Adding some text for searchability: Authentication is required to refresh the system repositories)