I can't turn on my Firewall

In settings it's says on but the red icon in the right corner says off. And avast says that i have a virus in the temporary internet folder. I can't delete it!

Try using http://www.malwarebytes.org/mbam-download.php

Try using http://www.malwarebytes.org/mbam-download.php

Do i have to uninstall avast?

No, that's a secondary program to remove your issue. When the issue is resolved, your antivir should work again, just keep that bitch up to date and you won't have any more problems.

No, that's a secondary program to remove your issue. When the issue is resolved, your antivir should work again, just keep that bitch up to date and you won't have any more problems.

so I'm soposed to have both of them?

so I'm soposed to have both of them?

I scanned and it found some trojans that were deleted sucsessfully. But my firewall is still off. When i press don't allow exceptions in the firewall setting it turns on