ISA Server 2006 – RRAS Failing, 806 GRE Errors

If your ISA server 2006 is having problems with any of the following, than I would suggest looking to see if you have the KB2509553 Windows Update installed.

ISA Server 2006 Issues

  • Slow DNS Lookup times
  • Remote desktop not working after clients connect to VPN
  • VPN server is stuck on “applying settings” when logging in
  • 806 GRE Firewall Errors when trying to connect to VPN
  • RRAS service crashes on ISA Server
  • New clients cannot connect, VPN server entering deadlock mode

Here is the support article documenting that KB2509553 does indeed break ISA.

You can visit the page above to download the hotfix, or click the button below. This will take you to a page where you can get the hotfix emailed to you.


** Note ** We filled out the form multiple times and the hotfix URL they emailed us was broken. Probably because this is an older issue. To resolve your problem simply uninstall the KB2509553 update on your ISA server and don’t re-install it.

Here is a technet post with people that have experience the same issue.

Here is a link for additional error troubleshooting for ISA Server 2006.

You may also like:

Install Windows 7 VGA driver on Dell GX270 This is a short guide on solving the problem when trying to install the VGA driver on a Dell GX270 when Windows 7 is installed. GX270 VGA Driver Inst...
Fix Corrupt Windows 7 Temporary Profile While working with Microsoft's Windows 7 operating system over the past few months I have noticed that sometimes when working with multiple profiles...
Install Windows 7 VGA driver on Dell GX260 This is a short guide on solving the problem when trying to install the VGA driver on a Dell GX260 when Windows 7 is installed. Dell GX260 Driver Ins...
How to Solve the Windows Update Error 80072ee2 In this article we will guide you through the most complete guide for solving the Windows update error 80072ee2. Windows errors are notoriously dif...
Remove Windows Vista/7 Printer Driver If you right click on a printer and delete it, this doesn't remove the printer driver from the machine. Sometimes when working with print servers and ...
READ ALSO  Reset .zip file associations in Windows Vista