Kindly perform the following actions to locate your virtual machine.
1. On your host Mac, go to Finder > Applications > Utilities > Terminal.
2. Run the command:
open ~/Parallels
A new Finder window should open and display your current virtual machines.
3. Double-click on your Windows virtual machine to register and start your virtual machine.
If the issue persists, kindly collect a technical report at the moment of issue reproduction (
(click the Parallels icon >Help > Send technical data > check "Attach screenshots..." > press Send Report) and send the report's 9-digit ID as a reply to this post.