This has happened to me too recently. It's making the software almost unusable in some cases. Is there a way to bring the mouse back to the main pc if it's lost on another screen?
Really need a fix for this.
End of Drakkit's quote
While rare, there are some apps (games mostly), and sometimes Windows itself (UAC window for example), that can snag or lock the cursor to a Secondary - again, its rare.
That said, killing the service on the Secondary should have the mouse come back to the primary after a few seconds. I have written a batch file to help with that:
https://cdn.stardock.us/support/uploads/mpRestart15.zip
Run it, it will kill the MP service, tic down 15 seconds, and then restart the MP service so you can get back to it.
Hope this helps.
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Sean Drohan
Stardock Customer Service Manager