"Microsoft is aware of this issue and is developing a solution. Before installing the Infrastructure Update, customers who use this configuration should use a test environment to verify that public URLs remain accessible after the update is installed."A few more details can be found on Joel Oleson's blog. Joel goes so far as to recommend that organizations using Alternate Access Mapping should hold off on the upgrade until a fix is available. I tend to agree, unless you are one of those rare companies fortunate enough to have a test environment with Alternate Access Mapping which mirror production.
Tuesday, July 29, 2008
Problem with SharePoint Infrastructure Update can affect your extranet
by Tony Bierman
This WSS KB article (KBID 951695, Last Review : July 23, 2008, Revision : 4.0) from Microsoft includes an acknowledgment of a known issue after installing the Infrastructure Update (32-bit, 64-bit). Applying the upgrade in a SharePoint farm that uses Alternate Access Mapping with a reverse proxy or a network load balancer, such as in an extranet deployment, may cause some public URLs to become unresponsive.