I have upgraded from windows 8 to windows 8.1, 64 bit recently. My Avast free edition was working very well with window 8, 64 bt but eversince I upgraded to 8.1, Avast is not down loading new definations. Can anyone help me ?
I am sorry you are having issues with Avast.
I am not connected to Avast, just another person who has their Internet Security installed on both of my computers. Perhaps I can help you with your questions.
There is a Avast Repair option in the Add/Remove programs in your computer.
Click on "Start", find "Control Panel" and click on it. A new window will open. Scroll down until you see Programs, click on it. Another panel will open up, you should see at the top Programs and Features, click on it and finally another panel will open up. Scroll down until you see Avast Internet Security, once you find it, right click it (hover your mouse over it will say Uninstall/Change. Once you click it another panel will be shown from Avast. Their will be several options for you to choose from. On the left side there will be shown the following. Update, Change, Repair, and Uninstall. Click on REPAIR and follow the instructions. This should fix any issues you have with Avast.
Please let me know if this fixes your issues.