when I install comodo firewall steam web browser stops working

When I installed comodo firewall steam browser keeps displaying black page and it seems to be loading forever (icon spinning).

event viewer logs show:
Error: Failed to add firewall exception for C:\steam\bin\cef\cef.win7\steamwebhelper.exe
Error: Failed to add firewall exception for C:\steam\steam.exe
Error: Failed to copy new service file to temp location

This happens only when comodo is installed. Zone alarm or Agnitum works fine.

Is there anything I can configure to make steam work ?