There is no operating system installed in this virtual machine.

Running Windows 10 on a 2019 Intel Macbook Pro. All running fine on Parallels 19 and never had any update issues in the past. Updated to 20.0.1 today and now get the no OS installed error. Any suggestions on a fix?

All my files are stored on the Mac side so worst case I build out a new VM but would like to see if I can get the old one running in the meantime to finish up some work on that VM.

 

Reverted back to Parallels 19 and wala, VM starts up no problem....

 

Exact same problem ("no machine installed" after updating on a 2019 Intel MBP) and same solution. It seems Parallels 20 doesn't work all that well in intel, ironically...

 

Same setup here (Windows 10 on a 2019 Intel Macbook Pro). After updating to Parallells 20 I was met with the message "There is no operating system installed in this virtual machine.". Reverted back to Parallells 19 and the Windows machine boots up again.

 

Is that x86 or x64.

No support for x86 in v20

 

I have a 64-bit Intel Core i7 processor (I7-9750H)

 

This means whether the installed Windows version is 32-bit or 64-bit.

 

I have a 64-bit Windows installed.