I went crazy over the same problem. I got half of the user in our company blocked with the Keyboard, and/or any USB device connected to it, like Pistol/Scan QR reader, When we moved from the version 10 to 11.2.
At first it happened only on Dell Computers, independently if WIN 10 was up-to-date of the latest version (2004). But then it happened also on some other computers.
In some cases it was enough to update to the latest Win10 update. In others I had to reinstall Win10, I even uninstalled Kaspersky but did not work.
kaspersky blocking keyboard
in Kaspersky Endpoint Security for Business
Posted
Thanks a lot. Your solution worked and now i can finally type back with my keyboard and use mouse again