TERRIBLEThe M! version is plagued with issues and has never run correctly. DO NOT EXPECT ANY CUSTOMER SERVICE. They will email you for supprt and then simply provide links for you to "learn how to install..." and other such "help".If you are a MAC user, one of the reasons you are is to avoid Windows and have a user focused experience. The "Help" desk side of this business is terrible. Takes 2-3 days to get an email response and then they may fix problems with your M! compatible version but then give you links on how do to all the rest of the work to get it running. I purchased a few months ago and they cannot get it to run and now tell me its beyond the refund period. STAY AWAY unless you're an experienced windows techie.UPDATE (May 27) The company responded very quickly AFTER I posted this review. I want to make sure their response below was not the end of the story since it leaves the impression things were addressed timely. I’m now fully using a competitive product that was super easy to install and who’s help desk did not take 48 hours to respond to inquiries. Parallels still refuses to refund my money even though they could never get the product to run on my machine stating I’m outside of the refund period. Mac users be warned.Update (June 1) They reached out via email today to let me know they have refunded my $99. Just to be consistent with their lack of accountability, they had to note in the email that “the decision to refund your money was made on May 13th, however it was never brought up again”. I don’t even really know what the means but what I do know is I received attention two times immediately after posting here and it took weeks to hear back through their e-mail only help desk. Happy to be done with them and happy they pay more attention to reviews than the help desk. Trustpilot works!