Why i can't change security level?

“I can’t change security level with the slider at tray.”
“I can change the security level slider at the program interface but it remains allow all.”

One of the reason i’ve found is the following: you forgot to uninstall other firewall titles or they aren’t complety removed.

You can check it this at startup entries*, at add/remove programs** and at registry hives***.

*: at windows xp, type in to Run…: msconfig. Then you can check startup entries.
**: type in to Run…: appwiz.cpl. You can see most of the installed products.
***: type in to Run…: regedit. Check HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run registry hive, that should contains startup entries as well (you mas see this from *).

A solution:

  1. Uninstall/remove all informations regarding the other firewall.
  2. Uninstall CPF + reboot.
  3. Reinstall CPF.

This fixed cases i met with the Sygate personal firewall versions (which are hardly visible after set up…).