Disk is Full or File is write-protected

WL pro 11 - Windows 11 - Error Message “Disk is Full or File is write-protected”.
Well, obviously not… I received this message from time to time when saving a montage. i have to save as, which is annoying. Anyone knows what i can do to solve this?

Hi

I’m on Windows 10 not 11 but are you running a third party security solution? Our experience is that this can produce these error messages

Hi Paul. I only have windows defender running.nothing else.