When you have the behavior shield on it will not let the metro apps run. It will not allow them to open. They close but stay stay running in the background when you try to load an app. Also when you have the firewall on in Avanst Internet Security it blocks the web access to all Metro Apps. Avast has yet to acknowledge the issue and put a fix out for it when it was reported right after update version 7.0.1466 whent live. The version before this did not have this issue. I dont like the fact that you have to turnj off the behavior shield and firewall to be able to use a Metro App. Solution for firewall from user hbhb: sfrausto Newbie Posts: 1 Re: Problem with Avast Internet Security and Windows 8 « Reply #3 on: June 28, 2012, 01:52:46 AM » Okay, after playing around with my AVAST Firewall settings, I finally got it to work with the apps. Go to your Firewall tab and click Firewall settings. Then click Expert setting in the top right area. Under the Policies tab (first screen) enable Internet Connection Sharing Mode. THAT'S IT!!! it will let you access the network for your apps, without having to disable your firewall for xx amount of minutes. The cool thing, if you're like me and don't want other users to access your skydrive or other apps, just simply uncheck the Internet Connection Sharing and it will block the apps again. =) Solution for Behavior Sheild: 1. clcik on real time shields 2. click on behavior shield 3. expert settings 4. uncheck "Monitor The System for unauthorized modifications 5. them click on OK now your Metro Apps will work.