Long Media sync not letting me use anki cards

I have been using anki desktop, and a ‘media sync log’ window opened. This log has been going on for over 5 hours - whilst it is happening my cursor cannot control the original anki screen where my decks are. I have tried to close the media sync window by clicking close, but this doesn’t work. I have also tried to close my original anki deck window, but cannot do this either. Does anyone have any advice ?

Please start by trying the steps on When problems occur - Frequently Asked Questions