Active Directory Federation Services (ADFS) is a component first introduced in Windows Server 2003 R2 that includes web single-sign-on (SSO) that authenticate a user to numerous web applications during a single online session. Consider the situation, where ADFS components are missing after upgrading Windows Server 2003 computers. As you may already know, if you’re running Windows Server 2003 R2 Standard Edition, only the ADFS Web Agents component is available for installation. You have to use Enterprise Edition to get the Federation Service and Federation Service Proxy components. Most people fix this problem by popping the Enterprise Edition DVD into their server and performing an upgrade. If you upgrade a Windows 2003 R2 Standard server to Enterprise, you’ll soon find that you still only have the ADFS Web Agents component available.
Additional documentation for ADFS:
- ADFS Design and Deployment Guide: This document goes through all of the different ADFS deployment scenarios and has links to many other useful ADFS documents.
- Also, if you’re setting up a test environment, check out ADFS Step-by-Step Guide
- I recommend supplementing this guide with the ADFS Product Support Blog.