I am running Parallels Desktop for Mac version 15.0.0-46967 on macOS 10.14.6 (mojave). I have two guests installed: Windows 10 and Ubuntu 18.04, both with the latest parallels tools. My iMac is the 27-inch, Late 2013 model with an SSD installed in place of the original fusion drive. When parallels starts, it does one of three things: Causes my iMac to hang while showing the spinning beachball/pinwheel and being completely unresponsive aside from mouse movement. Gets stuck on the parallels splash screen, never showing the control center window. Gets stuck starting one of the guests (it doesn't seem matter whether it's the Windows or Ubuntu guest). I have tried: Uninstalling and reinstalling parallels Running Disk First Aid (this shows no issues, and my hard drive is quite new). Running the Apple diagnostic tool (this shows a System Management Controller issue, but this seems unrelated according to https://support.apple.com/en-gb/HT201295). Switching my guest to the Apple hypervisor. Restarting my mac and removing the power cable for a few minutes, then replacing my power cable and trying again. Occasionally after uninstalling and reinstalling, parallels will work for a few days with no issues before hitting this problem again. I notice that the process 'prl_disp_service' is often stuck at 100% CPU at times when the system hangs. I run ESET antivirus, but have disabled the firewall feature to ensure there are no issues connecting with prl_disp_service. My iMac often stays in standby for hours at a time with parallels running, but the issues frequently happen after a clean reboot. I have attached my parallels.log for your reference. These issues have cost me a lot of time and energy. How can I get parallels working properly on my mac?