I am having a repeated problem NIS. It works o.k. for 6 weeks or so then refuses to scan.

The NIS window opens O.K. but will not respond to any scan request.

So I uninstall and reinstall, then update all. Restart the PC.

Then it scans and all is well for another 6 weeks or so.

I have done this 4 times now but still the problem returns.

Does anybody have any ideas how I can solve this problem permanently?