Parallels 16.3.0 Apple Silicon Windows 10 Screen Refresh Issues

Parallels Version 16.3.0 (50385) Technical Preview was released today and it is capable of running Linux and Windows VMs, but with certain caveats.  I cannot find a list of known issues for this software so I'm documenting my own.

  • Ubuntu 20.04 Desktop for ARM64 
    • ISO not locatable, installer wants VHDX only it seems.  Selecting "All Files" allows selection, but then the user is presented with an error suggesting the ISO is Intel (it's not).
    • If you choose to create the VM without a boot CD, the ISO can be mounted manually.  Installation succeeds without issue.
    • Once booted, the VM works well however Parallels Tools are not yet available.  Attempt to run via command line wi will state "Aarch64 is not supported".



  • Windows 10 Pro Insider Preview
    • Installation is done using the VHDX image from Microsoft and it is completely seamless.  VM installs and boots up fine with Parallels Tools installed and working. 
    • On my M1 Mac Pro, rebooting the VM causes the screen to stop responding.  The only workaround I've found for this so far is to reinstall the Parallels Tools via "Actions, Install Parallels Tools" and the screen will eventually flicker and come back.  Then click "Postpone" when prompted for reboot.  You'll be asked several times.

      **Edit:** It turns out that disabling time sync can fix this.  More details here: https://forum.parallels.com/threads/how-to-unfreeze-frozen-vm-bug-workaround.351871/#post-878636
    • Several items seem to trigger the Green Screen of Death, usually on reboot.  In many scenarios, simply using the "Restart' button from the recovery screen fixes this.



Using the Parallels Desktop "Send Feedback" utility, all above issues have been reported to Parallels.

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