Wifi dosent work with avast

My wifi dosent work with avast Internet Security it will only works with Ethernet cable. My firewall will only work on public and not on my privat network when I start avast. Best regards Anders

any other Security programs installed?.. firewall?

did you just install avast? …

what AV did you use before installing avast http://www.avast.com/en-eu/faq.php?article=AVKB11#artTitle

OK I have windows 8 firewall and the old virus program was avast free. Sorry for my bad Spelling am from sweden.

Sorry for my bad Spelling am from sweden.
Tjena grabben .... hur är läget i Vansjø

make sure that any leftover files from previous used AV (before avast) is removed http://www.avast.com/en-eu/faq.php?article=AVKB11#artTitle

then try a New clean install, run it for all Version you have had and reboot http://www.avast.com/sv-se/uninstall-utility
then install again http://www.avast.com/sv-se/download-software

Ok I will try this on wendsday when I coming home Tack

If you are on a network open Avast > tools > Firewall > settings
Select Internet connections sharing mode
Then try

Thanks for all help but it not works. My wireless card is Ralink Technology, Corp. if that can help to now.

When you try to connect using the wireless what error do you get

Avast stop the drives to the wireless card

What do you mean Avast stops the drivers ? Does it block them as malware ?

When I have avast free it works. But when I use ais it stop my driv to load and it says cod 31 in the wireless card

Re-install the driver for the card

I all ready don that and it dosent help. On my W7 computer it works nice its only on the W8 computer it dosent work.