I have been running the free Avast program and just installed the Internet Security program. The home page is showing that I need to turn on the firewall and update the virus definitions. However, neither of these features is working. When I try to do either I get a message telling me the firewall is not available and another that the definitions are up to date. Any ideas?
After you upgrade your avast! to Internet Security, did you reboot the machine? If not reboot the computer and check with avast!.
Plus make sure that you dosent have any other security softwares in the computer.
If you have any other security software apart from avast!. Makesure you remove it using the vendor’s own removal tool. You can find the removal tools from the below link
Please try a repair of avast via remove programs- double click avast and scroll down to repair and accept, reboot after running, if this does not solve your issue then i suggest a clean install of avast.
If you have further problems please reply with information about your system and version of avast installed
If the OP installed internet security by inserting License file in the Avast free (ie direct upgrade from FREE version to internet security),the UPDATING the programme may sometimes resolve the issue.We are doing that here everyday.
Still the first step should be repair/reboot, if the OP happened to upgrade to AIS from the free version then there previous updating settings would not be changed.
The issues iv seen on this forum from upgrading from free to AIS have usually been solved with clean installs if a repair fails to work.