After I have updated my Parallels Version to 12.1.1 (47491) the Shortcut STRG + Tab doesn't work on my Window anymore. I hope somebody can help. Or is it possible to download and install the previous Version of Parallels?
The last update has some issues with <key>+Tab apparently: Ctrl+Tab or Ctrl+Shift+Tab doesn't work either.
Checkout this thread: https://forum.parallels.com/threads/paralells-12-issue-with-ctrl-tab-in-windows.338979/ - the solution proposed by Parallels Support works at least for the Ctrl+Tab keys.
I have set OS X System Shortcuts to never send stuff like Start+TAB to OS X but when I do that it still sends it there instead of invoking Windows 10 Task View.