Firewall not available

Dear all,

is someone so kind to help me to solve this problem?

I bought the new avast version (avast! internet security) on line just few days ago.
Now, it seems there is a problem with the avast firewall, because I was trying to activate this and a massege by the system shows that the avast firewall is not available.
So, what can I do?

Thank you very much in advance for your precious assistance.

Best Regards
Simo!

You’re in the wrong place to post this problem, plese post you problem here
http://forum.avast.com/index.php?board=2.0

indicating your operating system & AIS version and if you get this message

from avast or windows (if you don’t know please post an image).

Repair avast!:

  1. Control Panel → Add/Remove programs → avast!
  2. Click on ‘Repair’.
  3. Follow instructions.
  4. Reboot.