I'm running El Capitain and Parallels Desktop 11 with Windows 10. All are the latest versions. Lately, while working in an application with the iOS (like Lightroom or Word), Windows will just suddenly attempt to open. The entire screen goes gray, blocking out the window I'm working on. If I click several times on the gray screen, a white screen will appear then after a little more clicking, a Windows opening screen will appear, then the Windows sign-in screen. Once I enter the password, the original iOS application comes back and I can continue working. Occasionally this will happen as I wake the computer from 'sleep' except it goes directly to the Windows screen then the sign in screen and then, after signing in, directly to the iOS desktop. Thanks for any advice.
Kaye
Kaye