Article ID: 2965004 - View products that this article applies to.
Consider the following scenario:
In this scenario, you find that external users are prompted unexpectedly for authentication when they are redirected between TMG nodes.
This problem occurs because Forefront Threat Management Gateway does not use the Domain account for the remote procedure call (RPC) that's used between nodes to exchange user credentials.
To resolve this problem, install Rollup 5
(https://support.microsoft.com/kb/2954173/ )for Forefront Threat Management Gateway (TMG) 2010 Service Pack 2.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology
(https://support.microsoft.com/kb/824684/ )that Microsoft uses to describe software updates.
Article ID: 2965004 - Last Review: June 17, 2015 - Revision: 2.0