JonathanP2
Bit poster
I have parallels 11. When windows 10 1511 update was released, I upgraded and Parallels 11 could not successfully launch the new build. Parallels support spent considerable time with me - and eventually received a number of logs and punted. I than performed a fresh reset of my windows 10 build 1511 (no applications just the os). This time the parallels could run the virtual fine. I added some of my software - quicken, foxit pro and some vpn software. everything was fine for several weeks. However, I soon found that my windows 10 virtual start menu would not launch. Luckly I had backups. However, over time even my backups experieced this issue. I tried all sorts of things - following windows 10 fixes and even re-installed parallels tools. Out of desperation I tried vmware fusion. I converted one of my working backups - and did all of the windows 10 updates. So far I have had no problems and my virtual machine size was cut in half. I beleive there are some serious issues with parallels. I will continue to try vmware to see if the same issues surface, but so far they have not (its only been a week).