I also tried to apply the rule for other apps: "%ProgramFiles% (x86)\Opera\opera.exe", "%ProgramFiles% (x86)\Google\Chrome\Application\chrome.exe". I also tried to insert a path manually as "C:\Program Files (x86)\Mozilla Firefox\firefox.exe". But the rule doesn't work and the application has access to the internet! I select a program by browsing to %ProgramFiles% (x86)\Mozilla Firefox\firefox.exe (I am sure that my Firefox runs from this executable). The rule is set to be applied for all profiles, all protocols, all IP addresses. I am using Windows 7 64 bit and trying to block a specific application from accessing the internet using "Windows Firewall with Advanced Security" (wf.msc). Perhaps something remained even after I removed it and causes this problem. I did try out Avast Internet Security (which contains its own firewall) at one point in time. except that your once-blocked programs suddenly start accessing the internet. The strange and dangerous part in all of this is that there was no notification indicating a problem with the firewall.
I tried re-installing Avast in hopes that both Avast and Windows Firewall could live in peace together but the firewall rules stop working immediately. The rules on my firewall starting work again once I uninstalled Avast completely from my computer. I also disabled all the Avast shields but that didn't work either. I tried Sadaf's suggestion but it didn't work for me. I am had the same problem with Windows 7 Ultimate 64 bit firewall rules not being applied. You can use Firewall App Blocker (portable freeware) to block an application easily through Windows firewall. So the moral seems to be that a 3rd party software may interfere in such a way that Windows Firewall is not able to block (or maybe apply any rules) in application-specific way. I turned off "Network" and "Web" "Shields" in it, and the rule is now applied correctly. In my case it was Avast Antivirus which has some modules for Internet. It seems that a 3rd party software was interfering with firewalling.
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