My Windows 11 PC updated to Norton 360 25.9.10453 yesterday. Since then, when I open a browser with multiple saved tabs after booting, NortonSvc.exe soon encounters an application error, and DNS queries timeout thereafter, until I reboot.
I’ve generally had good luck with Norton, and the present situation is rather distressing.
I have tried a full product uninstall and reinstall (twice), and confirmed Windows system file integrity. As an experiment, I tried backing-out a recent KB that updated ucrtbase.dll to the version shown in the screenshot, but that didn’t help.
