I have recently had a lot of issues with Avira antivirus for Mac and Parallels, with the virtual machine freezing on startup. I have got fed up with continually switching off the real-time protection to get the Windows 10 VM to load and after a particularly nasty experience where I had to reboot into Safe Mode to get my Mac back I have uninstalled Avira. Does anyone know of a good, free Antivirus for the Mac that will play nicely with Parallels?