Go to Settings > Cookies and Site Permissions > Handlers . Ensure "Allow sites to ask to become default handlers" is toggled ON .
Right-click the and select Terminal (Admin) or PowerShell (Admin) . msxblmultiplayer link fix updated
If this key does not exist, it means the protocol was deleted. The easiest way to restore it is to entirely from the Microsoft Store. Go to Settings > Cookies and Site Permissions > Handlers