Don't update! I just did and now i cannot run windows 8.1 or windows 10. Bot OS's keep crashing with memory errors. They worked fine until this update. Others are having the same problem. I am stuffed until Parallels fix this problem!
I have the same problem with Win 8.1 Interim solution, after lots of hours of reading forums and testing: change the cpu from 4 to 2 it seams to be working fine so far (I've tried to change it back to 4 and it crashes) Any solution/fix? Regards