Running Parallels 13 on a Mac with OS X 10.13.3. My VM OS is Windows 10. I am connecting to the Mac using Apple Screen Sharing. I can start Parallels, then start my VM, get the login and provide a password to log in to my Windows 10 machine. Once the Windows desktop appears, my mouse pointer disappears and I am not able to interact with my Windows applications. Any ideas? Jim P.