Dear Forum, I'm new to the forum so apologises if I have incorrectly placed this issue. I've been using previous versions of Malwarebytes both free and pro versions without a problem. In fact it has on many occasion saved the day where other products have failed with respect to Malware. So I'm a big support and want to roll out the pro version to all my company users. Before I do this I stumbled across what is a big problem recently. that is when using the latest v1.70 version (pro) with Parallels Desktop version 8. Within this environment I use a Windows 7 virtual machine on top of my Mac. The problems is most of the time i'm unable to login and if it does all the apps such as Office 2010, or eving the simplest things like My computer will show "not responding" They never come out of this and will not be stopped via the task manager. If I try to reboot or shutdown windows 7 just sticks on "logging out". I have to force a shutdown within Parallels. I created a new windows 7 virtual machine and all was well installing updates office etc.. then as soon as I installed Malwarebytes 1.70 the same started to happen..where various app or even My computer would error with "Not Responding". So far the only way I've managed cure the problem is by uninstalling Malwarebytes pro and this needs to be done in safe mode, then I was able to boot up both my Virtual systems fine without a problem. I'm appreciate this is could be an issue/clash with either Malwarebytes or Parallels, that said I was using the previous version 1.60 pro without a problem and this has only started occur since upgrading or installing from new to there V1.70 - I did try both an upgrade as well as a clean install. I have logged the issue with both Malwarebytes and Parallels support. However, in the meantime If anyone has seen this or has any ideas please advise. Many thanks for your help Regards Kevin