Please allow Alt+Tab to work!

When I login to my computer from home using ScreenConnect, the Alt+Tab feature does not work. I need to flip between Google Chrome and my work software 100's of times. Using the mouse to click on the Chrome icon or my software icon on the bottom of my screen is time consuming when I could simply be using keystrokes.

It used to work... and now, somehow it still works VERY randomly. It's not my keyboard... I checked on that.