Kaspersky Internet Security 7.0 MP1 (build 7.0.1.325)

With Mozilla Firefox browser installed and Kaspersky Internet Security 7.0 running on your PC Internet pages cannot be viewed. Reasons of such behaviour might be incorrect settings of the Firewall component in Kaspersky Internet Security 7.0. In order Mozilla Firefox would function correctly, it is recommended to configure the Firewall component:

• open Kaspersky Internet Security 7.0
• click Settings > select Firewall 
• on the right side in the Filtration system section make sure the slider is NOT set to Block All (if so change the filtration level by making it lower).
• click Settings in Filtration system section
• go to the Rules for applications tab. If there is an entry for firefox.exe, select it and click Delete
• click Add >  Browse
• select the Firefox setup folder. By default this folder is C:\Program Files\Mozilla Firefox
• select the firefox.exe file
• click Open > Template > select Mozilla Firefox
• Click OK three times
• close the application window