Firewall on win Server 2003

when i try to install comodo firewall pro3.0.25. installer shows me thi message: “Installed operating sysstem not supported by comodo firewall”
OS is Windows server 2003

Welcome to the forum zlobin_f

Would you mind confirming the version of CIS you are using please. Open CIS from the system tray and select the Miscellaneous tab, then about.

Hello zlobin_f

CFP 3.0.x and CIS 3.10.x do not support Windows 2003 as OS.
So that’s the reason the installer complains about “OS not supported”.