I have a number of ancient PCs running XP (fully-updated SP3) which have, in the past, had NIS or N360 installed on them. I have been gradually updating them all to NSwBU (I have a 10-device subscription), and there have been no major problems until I have recently got around to upgrading the last one, from N360 to NSwBU.
On this machine, NSBU.exe monopolises the CPU resources of the machine (80% - 100% usage) continuously (e.g. for all but a couple of hours during a period of about 130 hours, during which time no full system scans were undertaken) - to the extent that the machine is essentially unusable. Switching on Silent Mode and/or disabling Auto-Protect, or disabling every function of NSBU that I can, makes no difference. I have applied the Norton Removal tool three times, and have downloaded the latest version of NSwBU (22.6.0.142) more than once, just in case my copy had been corrupted, but none of that makes any difference.
I ran out of ideas, so have at least temporarily reverted to using N360, (same version) which works fine on this machine, with an acceptable degree of 'performance hit', given the accepted limitations of the hardware and OS. Whilst I realise that what represents 80-100% of my machine's CPU resources would probably only represent a small percentage on a modern machine, it does not seem right that, whatever the CPU capabilities, NSBU should run any CPU-heavy process more-or-less continuously for 100 hours+.
Any thoughts/suggestions or similar experiences?
Kind Regards, John