My coworker is having a problem that started yesterday. He is running SW2015-SP3.

Ctrl+S opens Save As instead of just saving and wants to save a Drawing as an Assembly!!

It is like it is reading the assembly referenced in the drawing and trying to save that instead of the drawing.

But here is the catch. It will still overwrite the drawing even though it is going to the wrong location and file name... scary stuff.

He has restarted SW and rebooted his computer.

I checked his keyboard shortcut settings, no problem there.

It happens on every drawing, not just a few.

Ctrl-S still saves correctly in the assembly.

He is just working around the problem by being diligent as he is saving.

What can I do to fix this?