The tech preview uses a different encryption algorithm than Fusion 13 and earlier - this is spelled out in the Tech Preview Testing Guide and in KB article https://kb.vmware.com/s/article/93071. You can’t simply provide the password to move that VM back to Fusion 13 because it can’t decrypt it
Try the following to move that VM back to Fusion 13.
Start with the Tech Preview
In the VM’s settings, remove the TPM device, decrypt the VM using the password, then set the VM’s compatibility back to hardware version 20.
Now remove the Tech Preview and install Fusion 13.
Start Fusion 13.
In the VM’s settings, encrypt the VM (only the files needed to support a TPM). Hint: remember the password even if Fusion stores it in the Keychain). Then add a TPM device to the VM.
You can now re-start the VM under Fusion 13.
- Paul (Technogeezer)
Editor of the Unofficial Fusion Companion Guides
