Century IT blog

SBS 2008 – Default Gateway is lost after a server reboot

June 11th, 2011

We have seen problems with several different installations of Microsoft Small Business Server 2008 (Microsoft SBS 2008) where upon a server reboot, the server becomes disconnected from the internet, losing email flow to/from the internet and users mobile and remote access stops working.

Users on the local area network (LAN) don’t seem to be affected and otherwise all other server functions e.g. shares, printers, Exchange 2007 still seem to work.

After investigation we have found that for some bizarre reason the setting for the (D.G) TCPIP default gateway on the SBS 2008 server has been lost for no apparent reason. Re-inputting the default gateway again or running the ‘Connect to Internet’ SBS wizard seems to resolve the issue until the server is restarted once again and the ther cycle of repair begins again.


After some investigation we have found that this is a known bug and Microsoft have available a hotfix which is only available upon request rather than a Microsoft Critical Update. You can review this Microsoft article KB973243

The fix will involve installing a Microsoft hotfix and making some changes in the SBS 2008 server registry.  http://support.microsoft.com/kb/973243


Our experience is that once the hotfix and registry changes have been applied the issue does not re-occur.



Century IT Services – Getting IT Right

Providing Computer Support & Network Support to businesses in Hampshire, Dorset, Surrey, Wiltshire, Sussex & Berkshire.