Just tried to install Avast free on my trial version of Win 8.1 Preview. It will not install. Using the troubleshooter it says an update is available but the link only takes me back to the place I got the program from in the firsts place.
I realize Win 8.1 is officially "out’ yet but it would be nice to have something better than Windows Defender! LOL
Sorry to report no joy on the beta version of Avast. It appeared to install OK but I have no icon in the tooltray to show me it’s there and running. I get a message saying the “side by side configuration is incorrect”. If I use the Action Center it does show Avast as being “enabled.”
I saw another post suggesting to d/l vcredist_x64.exe to solve the “side by side” message. Did that but I still have that message when I click the shortcut to run Avast.
Try the x86 version. I had a problem with one of my games after the latest Windows updates I installed last night. I tried the x64 one and no go. Then installed the x86 version and everything is ok. I’m using Windows 7 64bit but it might help in Win 8 also.