ISA2004 SP3 Breaks Internet Access and RDP?

<![CDATA[ You have a computer that is running Microsoft Internet Security and Acceleration (ISA) Server 2004. You install ISA Server 2004 Service Pack 3 (SP3) on this computer either manually or from the Microsoft Update Web site.
If the ISA Server 2004 SP3 installation fails, a rollback operation is performed to restore the ISA Server components to their pre-update versions. However, after the rollback operation is complete, the Microsoft Firewall service does not start. Additionally, the following error messages are logged in the Application log:
Error message 1
Event Type: Error
Event Source: Microsoft ISA Server 2004
Event Category: None
Event ID: 1000
Date: Date
Time: Time
User: Not applicable
Computer: ServerName
Faulting application wspsrv.exe, version 4.0.2165.594, stamp 43cd50a5, faulting module dnsfltr.dll, version 4.0.2165.594, stamp 43cd50bc, debug? 0, fault address 0x0000cce9
Error message 2
Event Type: Error
Event Source: Microsoft Firewall
Event Category: None
Event ID: 14056
Date: Date
Time: Time
User: N/A
Computer: ServerName
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.
Method 1: Reinstall ISA Server 2004 SP3
1. Download ISA Server 2004 SP3.
2. Exit all ISA Server utilities, and then close all ISA Server user interface components. For example, close the ISA Server Management Microsoft Management Console (MMC) snap-in.
3. Exit all other RDP sessions on the server. To do this, follow these steps:
1. Open Task Manager, and then click the User tab.
2. Right-click a user account that does not represent your current connection, and then click Log Off.
3. When you are prompted to verify the action, click Yes.
4. Repeat steps 3b through 3c for each RDP connection.
4. At a command prompt, type the following command to reinstall ISA Server 2004 SP3, and then press ENTER:
msiexec /p Full_Path_To_SP3_Package REINSTALL=all REINSTALLMODE=omus /l*v c:sp3.log
Note We recommend that you reinstall ISA Server 2004 SP3 in repair mode.
Method 2: Reregister the ISA Server administration component
1. Click Start, click Run, type cmd, and then press ENTER.
2. At the command prompt, type the following commands. Press ENTER after each command.
cd /d “%programfiles%microsoft isa server”
regsvr32 wspadmin.dll

3. When you receive the "DllRegisterServer in wspadmin.dll succeeded" message, click OK.
4. At the command prompt, type the following commands. Press ENTER after each command.
md VPNNetsh
net start fwsrv
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