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#51
I had the same problem. It started suddenly. I don't know what changed.
The problem was global to Windows, not just Office.
Any time I copied via a right-click it made a noise.
It helpfully chose what was arguably the most annoying sound in its repertoire.
I would have preferred something more pleasant (like, say, fingernails scraping on a blackboard).
I went to Control Panel -> Sound -> Sounds tab
First I tried selecting "No sounds" from the Sound Scheme box. That solved the problem, but it's somewhat of an overkill if you want to be notified about new email, etc.
I discovered that the sound I was hearing was called Windows Critical Stop.wav.
I went back to the Windows default sound scheme
I clicked on "Critical Stop" in the Program Events pane and set that to No Sound"
I then saved that modified sound scheme under a new name.
That solved my problem. I don't know why Windows suddenly decided to classify a copy as a "Critical Stop" event, but I'm afraid that question is above my pay grade.
I probably will miss being informed about some genuine "cricial stop", but it's well worth it to me.
Best of luck