i got an update for KIS 2020 yesterday. From version (d) to (e). I remember that i got a popup from KIS in the 2019 version to restart my computer after an update. I didnt get any for the update i mentioned above but the size was more than 10 MB (so i figured it had to be an version update, not just database update).
After restarting it showed version (e). When i tried to start Firefox i got an Password-Manager Popup from Kaspersky (like they do occasionally every week or smth). But Firefox didnt really start. The process hung up and couldnt be closed via task manager. Restarting PC leads to the same result. I couldnt start Firefox. There was no idication of a blocked process in the Kaspersky reports. I could start VirtualBox either. Chrome stills works.
After installing a recent backup with KIS 20 ver. (d) everything works fine. After Updating again => same errors as descirebed above.
I upgrade from KIS 19 to 20 without kavremover. Using the normal uninstall routine on the freshly installed backup to delete KIS 20 (d) and reinstalling it works, but i dont get an update to version (e) with the database update function.
Using Windows 10 1903, latest update.
Asus X570 Motherboard