blockout

fms2k8, After trying all the above suggestion in this thread, I finally solved my firewall problem by uninstalling service pack 2 and then doing a registry fix on this key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess That let me enable the firewall but with service pack 1. Then I reinstalled service pack 2 and all is well. Attached is a reg fix for it that I obtained from another site. Worked great for me but remember that this is the key from a machine with service pack 1. Hope this info helps in some way. HKLM_Sys_CCS_Services_SharedAccess.reg

Followup, Since nothing I tried would turn on the Windows Firewall, I uninstalled ServicePack 2. After reboot, if I go to the network adapter properties to enable the firewall, now I get a message saying "a error occured while Internet Connection Sharing was being enabled" and "the specified service does not exist as an install service." Can anyone help with this. Maybe if I can get this straight, when I reinstall SP2 it will allow the firewall to enable. Thanks

n5eea, I am having the exact same problem with not being able to access the windows firewall and start it after installing SP2. Unfortunately the registry rename fix you provided didn't work for me. Do you have any other suggestions that I might look into? After the SP2 install reboot, the firewall came up unmonitored and security center cannot enable it. When try to enter the firewall settings, I get the message, "Do to an unidentified problem, Windows cannot display Windows Firewall settings". I would greatly appreciate any suggestions on how to repair this problem. All else seems to be working well. Thanks.