Same problem. W11 Pro - latest version of Parallels. Applications have frozen (OneNote and ToDoList), and it was done. Dom
Kindly refer to this link - https://kb.parallels.com/en/123094 to fix the black screen issue on the virtual machine. If your remote computer has the black screen issue via Parallels Access then refer to this link - https://kb.parallels.com/en/125547. Thanks.