Up until just recently I was able to zoom in and out in the cockpit, also on the outside view.  But recently, I cannot use the zoom feature.  I thought it was my mouse so I replaced it, but it is not a mouse problem.  Everything else seems to work properly but no matter what I do I cannot get the zoom function to work.  Does anyone have any idea as to how to get the zoom feature on my mouse to work?  Thanks.

I open the Camera window in MSFS and then minimize it to the upper left of the screen. When I restore the window I use the mouse to move the slider for zooming. More precise than the mouse wheel. Faster too.