Avast firewall won't activate

Avast Free Antivirus / Premium Security
1

I’ve just installed the new 2015 version of “Avast Internet Security” (used to be called pro)
On a Windows 7 pc it shows the urgent warning that the firewall has not been activated. I checked, the Windows firewall is activated.

When I try and activate the Avast firewall I get a message “firewall cannot be activated” (words to that effect in another language).
I can’t find any hint from Avast why it can’t activate the Avast firewall. Any ideas about where the activation log is written?

2

hey and welcome to the forum. do you have a third party firewall installed like comodo,outpost? I’m not sure but i think you can have the windows firewall active at the same time as the avast one but I’m not 100% sure about this. i hope someone more knowledge confirm this.

3
I've just installed the new 2015 version of "Avast Internet Security" [b](used to be called pro)[/b]
avast PRO is a separat program, with no firewall https://forum.avast.com/index.php?topic=159528.0

avast http://www.avast.com/home

4

what AV did you use before avast?
was it removed according to vendors instructions / and using removal tools http://www.avast.com/en-eu/faq.php?article=AVKB11#artTitle

Successfully Installing avast!
https://docs.google.com/document/d/1TCCX0R7AAF2WOxAMQ_kcun2nNnCPFAk2P4RBzFXSgds/edit?pli=1

5

Thanks Pondus, Mikael,
There are no other firewalls. I was using the 2014 version of Avast Internet Security and got prompted to update it. Which I did.
So there was no de-installation necessary.

6

Repair Avast:

  1. Control Panel → Add/Remove programs → Avast
  2. Click on ‘Repair’.
  3. Follow instructions.
  4. Reboot.
7

Sorry, forgot to reply earlier.
This solve the problem. Many thanks.

8

You’re welcome.