Article ID: 981492 - View products that this article applies to.
Consider the following scenario:
To work around this problem, manually change the port binding information in IIS after the port binding information has been updated by using the Set-SPWebApplication cmdlet.
For more information about how to change the port that Internet Information Server services will listen to, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/149605/ )How to change the TCP port for IIS services
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.