What to i do to get my ISAserver to work again . See the error message. The FW cannot be startet !! Tried restart of server. help Event Type: Error Event Source: Microsoft Firewall Event Category: None Event ID: 14056 Date: 04.05.2007 Time: 11:41:57 User: N/A Computer: BONGO Description: The application filter (DNS Filter, CLSID={49FE2B2F-3BB4-495C-87C8-3890C3C35756}) performed an illegal operation inside the Firewall service process at method FilterInit. The Firewall service terminated. To resolve this error, remove recently installed application filters and restart the service. If this does not resolve the problem, contact the component vendor. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Did you ever resolve this issue? I have had the same problem on a brand new IBM 3400 server. Nothing else but MS SBS2003R2 installed.

See if this helps. http://support.microsoft.com/kb/937028