Windows 8 Applications will not open with Avast

Hello,

I downloaded Avast (first time user) yesterday, and today I discovered some of my Windows 8 applications such as Windows Calendar won’t
open. The applications worked, until I downloaded Avast.

How do I fix this?

Thanks for your help.

Welcome to the forum. :slight_smile:
See if the following solves your problem:
http://answers.microsoft.com/en-us/windows/forum/windows_8-performance/windows-8-start-screen-and-apps-not-responding/3efd69c2-efad-4156-bc29-3b113d9219a7
Be sure to reboot your system after applying this fix for any changes to be applied.