Parallels Desktop 16 still won't start on macOS Big Sur Public Beta 4

I was finally able to launch PD 16. First, I had to delete some Western Digital drivers (with SIP turned off) which were leftovers from a WD MyPassport external hd which I had owned years ago. After this, the Parallels install worked fine. However, after trying to start my virtual machine, the iMac crashed (black screen). I then remembered a suggestion made in the forum and switched the hypervisor from Parallels to Apple. Everything works fine now.
 
Same issue...

THE FIX... Uninstall VirtualBox with CleanMyMac X...
Regular uninstall does not work for what ever reason, so something is being left from VirtualBox that is causing the conflict.
 
I am still UNABLE to launch Parallels. I have tried the Virtual Box route. I have tried all the codes. Nothing.
Created an error log: Report ID: 348469351
 
@LeeR6 Try this:

This worked for me until they get this fixed. It is not perfect, as things run slow and graphics are blurry.

1. Locate the virtual machine's file as described in this article: https://kb.parallels.com/en/117333
(It is usually in your user folder under Parallels folder)
2. Right-click on it > Show Package contents.
3. Inside you will see a config.pvs. Right-click config.pvs > Open with TextEdit.
4. Inside of it find (CMD+F) the following part:
<HypervisorType>0</HypervisorType>
and change it to
<HypervisorType>1</HypervisorType>
Save the changes.
5. Run Parallels Desktop. Run the virtual machine. If prompted to reset the virtual machine, do it.
 
Just loaded Beta 6. This version doesn't crash when you try to launch a VM but the vm wont start unless you have hypervisor set to apple.
 
OK I was wrong. What else is new... The security was blocking the driver. Stay with apple. not Parallels for hypervision or VM will crash mac.
 
I have had the restart loop with PD 16 since downloading it. After multiple trial and error and all of the methods listed here (terminal commands, uninstalling VirtualBox), I was finally able to get out of the restart loop (Big Sur Public Beta 6). What worked for me was disabling SIP (start from the Recovery Drive, run Terminal, type csrutil disable and hit enter) and deleting old WD kext files from Library/Extensions. I then re-enabled SIP (boot from recovery, run terminal, type csrutil enable and hit enter, then reboot. Now if Adobe Acrobat Pro would work under Big Sur...
 
Parallels 16.0.1 is out and it fixed all of my issues. I am running Big Sur Public Beta 3 (Beta 6) and it runs great with Parallels hypervisor. You should update if you have not.
 
TheTack said:
Parallels 16.0.1 is out and it fixed all of my issues. I am running Big Sur Public Beta 3 (Beta 6) and it runs great with Parallels hypervisor. You should update if you have not.
Click to expand...
Whats the advantage of running with Parallels hypervisor as apposed to apple?
 
I switched my Catalina to Big Sur beta 6 two days ago, and updated Paralell Desktop to v16 yesterday. I had the 'reboot to install Parallels' loop: when launching it wouldn't open control center and instead display the popup asking for a reboot.

I finally found informations here from peoples who had the same problem. Following general advice, I uninstalled Virtual box (using Parallels Toolbox App-uninstaller which works fine), it fixed the reboot issue.
 
This morning I upgraded Parallels to 16, and installed BIg Sur Beta 10, and this problem still exists. Granted, I haven't tried any of the 'fixes' in this series of postings, that will come in the next day-or-so.
 
RickK1 said:
This morning I upgraded Parallels to 16, and installed BIg Sur Beta 10, and this problem still exists. Granted, I haven't tried any of the 'fixes' in this series of postings, that will come in the next day-or-so.
Click to expand...
Hello, could yo collect the tech report please and post the report's ID here?
Also screenshots of the issue will be very helpful.
 
I just sent the technical report (34Ji/32Cm@CpLaB), and attached a copy of the screen shot of the reboot message (it is attached here as well).

As I noted in the technical report, due to this difficulty, last week I backed off to use Catalina (so that I could use the installed version of Parallels, which was working fine). This morning, I upgraded (again) to macOS Big Sur Beta 10 (20A5395g), and tried Parallels, same problem. I then (based on an earlier recommendation) changed the hypervisor to 0 (instead of 1), but that didn't work. I then changed the hypervisor back to 0, same problem.

Also, FYI, I can use VMware Fusion under Big Sur and it works OK, but not as good graphics as Parallels under Catalina.
 

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RickK1 said:
I just sent the technical report (34Ji/32Cm@CpLaB), and attached a copy of the screen shot of the reboot message (it is attached here as well).

As I noted in the technical report, due to this difficulty, last week I backed off to use Catalina (so that I could use the installed version of Parallels, which was working fine). This morning, I upgraded (again) to macOS Big Sur Beta 10 (20A5395g), and tried Parallels, same problem. I then (based on an earlier recommendation) changed the hypervisor to 0 (instead of 1), but that didn't work. I then changed the hypervisor back to 0, same problem.

Also, FYI, I can use VMware Fusion under Big Sur and it works OK, but not as good graphics as Parallels under Catalina.
Click to expand...
Hello, did you update your Parallels Desktop 16 to the latest build 16.1.0 an check the issue?
 
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