I am running updated and current Win 10 on a PC. Kaspersky Total Security is running in the background but the program menu will no longer appear whether I try to use the start menu or the right click popup in Win Explorer. The system tray icon has also disappeared. I have rebooted twice with the same result.
I don't know if this has anything to do with it but this all started about a week ago when I updated PDF-XChange Editor and it requested to close Kaspersky to install the update. Stupidly, I agreed. I've been using PDF-XChange Editor for a couple of years and I'm confident it's not a malicious program.
Does anyone have any suggestions?