Parallels 13 here and have the same problem. Keyboard works fine inside of apps, but won't work in Windows (like the search or file explorer for example). This is something that started happening after Windows 10 was installed (I've used Parallels since about version 3!) Tried the Settings->Access in the KB articles, I've rebooted, reinstalled the toolbox, fiddled with mouse and keyboard settings. Nothing changes behavior ... keyboard works fine TO LOG IN (type password) and after that only within Apps (not for anything directly to do with Windows ... even the Edge browser search bar has stopped working (that used to work at least).
If you go to the Win10 control panel for the keyboard, I can type in the key repeat test box and everything works. It thinks everything is OK. Drivers are OK. It just doesn't work for the Windows OS specific stuff. Obviously keyboard is there and works INSIDE other apps. Strange and frustrating.
Last edited by a moderator: Sep 20, 2017