The on again, off again message when clicking on support of installation, repaired=success is back for me. I've had this periodically throughout the years but no since the latest version. This morning I could not right click in the sys tray to open NS. I also tried right clicking on icon, open as admin. Reboot--same thing...another reboot now its fine.
Is it time to do the old uninstall-reinstall routine? 22.5.5.1.4
Running Windows 10 Pro Alienware 18.