So...I finally was able to get an upgrade to go completely through from Win 7 to Win 10 Pro (both 64bit) under Parallels 11. In order to do so I did the following.
-Uninstalled Parallels tool while in Win 7
-Upgraded using info from KB - used Media Creation tool to make USB
So I got into Win 10 and then installed parallels tools. restart....BLACK SCREEN FOR OVER AN HOUR!
-Uninstalled Parallels tool while in Win 7
-Upgraded using info from KB - used Media Creation tool to make USB
So I got into Win 10 and then installed parallels tools. restart....BLACK SCREEN FOR OVER AN HOUR!