Error Parallels 15 macOS Big Sur Beta 3

App & System Services Core OS
ehdreii OP
Created Jul ’20
Replies 21
Boosts 0
Views 9k
Participants 20
Installed latest Beta, getting the following error: Parallels Desktop cannot be started because some of the required components are missing from the operating system of your Mac. I've tried to reinstall Parallels Desktop 15, however, the installation hangs and does not complete. Any suggestions?
Replies  21
Boosts  0
Views  9k
Participants  20
RazorLV OP
Jul ’20
Same problem here. Beta 2 it was still working :(
billxiong OP
Jul ’20
I learned from Parallels forum that the problem was caused by version check of Parallels.
The solution is first set the environment variable "SYSTEM_VERSION_COMPAT=1" , and then use command 'open -a "Parallels Desktop" ' in terminal to run PD. Now PD15 can start
RazorLV OP
Jul ’20
Thanks billxiong!
StarLavaLord OP
Jul ’20
How do you set the environment variable "SYSTEMVERSIONCOMPAT=1" for PD15?
MM2012 OP
Jul ’20
@StarLavaLord
export SYSTEMVERSIONCOMPAT=1
kuleebataq OP
Jul ’20
Hi, how to export SYSTEMVERSIONCOMPAT=1
evan.h OP
Jul ’20
That's a command for Terminal. Do a search for Terminal.app and run it. Then type:

Code Block 
export SYSTEMVERSIONCOMPAT=1

and press return. That's telling your system that whenever an application asks it for the value of "SYSTEMVERSIONCOMPAT", respond with the number 1.

This worked for me as well. Thanks to @billxiong!

EDIT: I should note that I first had to install the app from the dmg I downloaded from the Parallels website. Once I opened the DMG and was presented with the Instal.app on screen, I ran the following in the Terminal:

Code Block 
open -a '/Volumes/Parallels Desktop 15/Install.app'

This successfully ran the installer. Now that Parallels is in my Applications folder, I can now run it by typing: 

Code Block 
open -a 'Parallels Desktop'
Vitaliy Boyko OP
Jul ’20
Not working for me with "export SYSTEMVERSIONCOMPAT=1" this solution


Still the same

Parallels Desktop cannot be started because some of the required components are missing from the operating system of your Mac.
CHrisTheBiPolarBear OP
Jul ’20
Delete you current Parallels installation and get from the App Store. Note you will need to be on The subscription (option for this to work)
ahmadtharwat OP
Jul ’20
I tried the App Store Solution and didn't work for my license.
Right now I'm stuc and need to access my virtual windows.
Tried the terminal.app solution and didn't work as well.
MiracleMan OP
Jul ’20
Evan solution is correct, the only issue is the export

It should be 

Code Block 
export SYSTEM_VERSION_COMPAT=1  


then run

open -a '/Volumes/Parallels Desktop 15/Install.app'

with the mounted download.
cacimbo OP
Jul ’20
works fine , so... it is not possible to enter configure of the parallels,
the program is not responding((((
Samrth012 OP
Jul ’20
Hey it didn't work "export SYSTEMVERSIONCOMPAT=1" for me I tried it many times but it is not working.
Also opening it doesn't work it comes to have the same error.
PaulvSchaik OP
Jul ’20
My startup script (called is parallels.sh)

Code Block 
#!/bin/zsh
export SYSTEM_VERSION_COMPAT=1
open -a Parallels\ Desktop.app


Parallels inittool looks for system version 10.x, in beta 1 and beta 2 MacOS reported 10.16 as the system version from beta 3 onwards the system version is 11.0 and NOT 10.16 so Parallels inittool stops.

Code Block 
export SYSTEM_VERSION_COMPAT=1


makes the system report 10.16 again. (check with sw_vers in terminal).

Code Block 
Look at ProductVersion:
~                                                                              
▶ sw_vers
ProductName:	macOS
ProductVersion:	11.0
BuildVersion:	20A5323l
~                                                                              
▶ export SYSTEM_VERSION_COMPAT=1
~                                                                              
▶ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.16
BuildVersion:	20A5323l
jeffe0m OP
Jul ’20
Used solution from billxiong and MiracleMan, it works.

Thanks guys!
CHrisTheBiPolarBear OP
Jul ’20
This got application installed and working but after shutting application down couldn't get it to start again.
awumsuri OP
Aug ’20
Used solution from billxiong and MiracleMan and  PaulvSchaik  it works.

Thanks guys!
RadekStasiak OP
Aug ’20
I have the same effect after installations Beta software :-(
Installed latest Beta, getting the following error: Parallels Desktop cannot be started because some of the required components are missing from the operating system of your Mac. I've tried to reinstall Parallels Desktop 15, however, the installation hangs and does not complete.

Can You help us?
VB Reddy OP
Aug ’20
Setup: 
<Host> macOS Big Sur Public Beta 1 Build 20A5343j
<Guest> Win 10 Ult
<Scenario-1> After macOS Big Sur upgrade, VM won't start. Used commands: export SYSTEMVERSIONCOMPAT=1; open -a 'Parallels Desktop'. VM was up and Win OS started working. Shutdown.
Restarted VM with the same procedure. VM was up and Win OS started working. Re-installed Parallel Tools. System Crashed and could not make it work.
<Scenario-2> Installed Parallels v15.1.4. Tried all the prescribed workaround steps. But none of them worked.
<Workaround - Success> Went into Time Machine and replaced the Parallels v15.1.4 with the last working copy before upgrading to Big Sur. Used commands: export SYSTEMVERSIONCOMPAT=1; open -a 'Parallels Desktop'. SUCCESS. VM is up and OS working and peaceful shutdown. Restarted the VM and OS. SUCCESS. Was able to work.

  • Note* Do NOT try to change the Config setting of Parallels, which will crash the VM and OS becomes unresponsive.

Wish you all the best.
CHrisTheBiPolarBear OP
Aug ’20
Hi Folks Good News Parallels 16 has just been Release, according to release documentation most problems have been fixed.
albertotapia80 OP
Nov ’20
Hey guys, I tried the following and it worked with Parallels Desktop 14:

First: Open de dmg file so that the installer is mounted

then
Code Block 
export SYSTEM_VERSION_COMPAT=1

and finally

Code Block 
3. open -a '/Volumes/Parallels Desktop 14/Install.app'


Thanks to @billxiong and @Evan.h
Error Parallels 15 macOS Big Sur Beta 3
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