Parallels 16 & Bug Sur - Crash

Discussion in 'Parallels Desktop for Mac' started by Cinemagic, Aug 28, 2020.

  1. Cinemagic

    Cinemagic Junior Member

    Messages:
    11
    Parallels 19.0.0 (48916)
    Windows 10 VM
    Mac OS 11.0 Beta (20A53541) Big Sur
    MacBook Pro 15 inch, 2016 16GB RAM

    Start Max OS
    Start Parallels
    Start Windows 10 VM

    Immediate computer crash. Not application, but computer itself crashes and restarts.
     
  2. MartinB23

    MartinB23 Bit poster

    Messages:
    1
    Same with me ! Please help
     
  3. Cinemagic

    Cinemagic Junior Member

    Messages:
    11
    Change the hypervisor from Parallels to Apple. It will then work. Configuration > Hardware > CPU & Memory > Advanced Settings > Hypervisor (change to Apple) - you can leave Adaptive Hypervisor checked.
     
    DavidC78 likes this.
  4. DavidG2

    DavidG2 Member

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    24
    I tried the Hypervisor change but I still end up with a hung vm in a black box. They seem a little premature advertising version 16 for Big Sur.
     
  5. LeonardH

    LeonardH Bit poster

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    6
    I'm trying to change the hypervisor, but its saying "To be able to change the settings on this page, resume the virtual machine and then shut it down." I can't resume the virtual machine because my machine hard crashes when I try to run it. Any suggestions on how to shut down the VM w/o running it? Thanks!
     
  6. DavidG2

    DavidG2 Member

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    24
    You could use the Action Menu and select STOP - I think that will do it.
     
  7. LeonardH

    LeonardH Bit poster

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    6
    Hmmm. Maybe I'm missing something, but the only action I see is Resume, which I can't do.
     
  8. DavidG2

    DavidG2 Member

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    Sorry - just an idea. Personally I tried the Apple Hypervisor and it did not help for me. Just ended up with Parallels desktop taking all the CPU time and a 500mb disk image of my VM which never changed. I'd wait for an update - that's what I'm doing.
     
  9. LeonardH

    LeonardH Bit poster

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    6
    Sounds like a good plan. Thanks!
     
  10. Maria@Parallels

    Maria@Parallels Problem solver

    Messages:
    8,122
    Hello guys, please update your Parallels Desktop to the latest build 16.0.1. and check the issue.
    Please let us know if the issue still persists.
     
  11. LeonardH

    LeonardH Bit poster

    Messages:
    6
    I updated and now my computer hangs on reboot. Help!
     
  12. LeonardH

    LeonardH Bit poster

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    6
    Had to reinstall Big Sur, but at least my machine will boot now. I'm too scared to run Parallels 16.0.1 again.
     
  13. LeeFuller

    LeeFuller Bit poster

    Messages:
    3
    Here is a workaround to updating your Hypervisor setting if you cannot make the change in the configuration - due to being unable to resume the VM.
    1. Locate your VM file for this virtual machine.
    2. Right click on the VM file and select "Show Contents".
    3. Locate the file (which should be at or near the top) that is called "config.pvs"
    4. Open this file with TextEdit.
    5. Select the ENTIRE file and copy it.
    6. Open another text file on your desktop and paste the copied contents into this new file. Name it whatever you like, and save it. This is your backup in case there is a catastrophic problem.
    7. In the "config.pvs" file, locate this line:
      <HypervisorType>0</HypervisorType>
    8. Change the "0" to "1".
    9. Save the file
    10. Now retry starting your VM.
    This was what Parallels Support just did for me, and it works now.

    Hope this is helpful.
     
    Joeyd3 likes this.
  14. Joeyd3

    Joeyd3 Bit poster

    Messages:
    1
    This worked for me! Thanks.
     
  15. TomasH8

    TomasH8 Bit poster

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    1
    didn't work for me, a previously working windows 10 vm now causes a blank screen on MacBook, requiring me to force a reboot. Hypervisior is set to apple, tried restoring a snapshot, checked the kernel isn't being blocked in security.
     

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