KnowledgeBase: ADFS authentication issue for Active Directory users when extranet lockout is enabled

Active Directory Federation Services (AD FS) in Windows Server 2012 R2 is a vastly improved version of Active Directory Federation Services found in previous versions of Windows Server. One of its features, however, might prove extremely counter-productive and counter-intuitive to its feature name and normal behavior in a certain scenario.    The situation Active Directory … Continue reading "KnowledgeBase: ADFS authentication issue for Active Directory users when extranet lockout is enabled"

KnowledgeBase: Windows Server 2012 R2-based AD FS Proxy consumes 100% CPU

As part of the May 2014 Update Rollup, Microsoft has released an update for Windows Server 2012 R2-based Active Directory Federation Services (AD FS) Proxies, consuming 100% CPU. This leads to rejected logons and slow performance for colleagues trying to authenticate to the Active Directory Federation Services (AD FS) infrastructure.     The situation The Active … Continue reading "KnowledgeBase: Windows Server 2012 R2-based AD FS Proxy consumes 100% CPU"

KnowledgeBase: Colleagues with IE get Windows prompts when authenticating to AD FS behind TMG, forms-based authentication when using Chrome or FireFox

Today, a colleague came up to me to ask me a question on a weird situation he encountered while troubleshooting an Active Directory Federation Services (AD FS) implementation at a customer site. Note: We didn’t implement this situation, but after solving this challenge, we gave some great pointers to get the environment sorted.   The … Continue reading "KnowledgeBase: Colleagues with IE get Windows prompts when authenticating to AD FS behind TMG, forms-based authentication when using Chrome or FireFox"