That’s the dimmest answer yet

By 10:00 this morning I had six phone calls from users (my customers) with this problem
Doubtless there are hundreds more out there.
Problem is not just with Win8.1 - it also affects 8/7/Vista
What am I supposed to do? Tell them all to uninstall Avast and use another AV program instead?
For many users, IE is an essential program. Avast is replaceable. The developers need to remember that