ADFS Configuration Wizard Fails with Error “The certificates with the CNG private key are not supported”

Want to allow ADFS to be installed correctly?  Our trusty Canadian PFE Gregg O’Brien shows us a recent issue he  resolved at a customer’s site and how he quickly brought balance back to the force…. Upon installing a new ADFS infrastructure or upon renewal/replacement of the certificate on an existing ADFS infrastructure, you may receive…


ADCS: Manually Created CDP Extensions Cause CRL Look-up Failures

Summary: Gregg O’Brien, a Microsoft Premier Field Engineer from Canada, makes a case for not throwing sand in your face and correct zipper placement when dealing with a Certificate Revocation List Distribution Point (CDP) in Microsoft Active Directory Certificate Services.  The moral of his story:  make sure your CDPs are properly formatted or you’ll see…


How to Avoid Having Users Enroll for Multiple Certificates

Gregg O’Brien is a Microsoft Premier Field Engineer from Canada. In this post he talks about the ‘certificate explosion’ phenomenon and suggests a way to mitigate it. Introduction We live in some very exciting times – we have so many devices to choose from: desktops, laptops, tablets, hybrids/convertibles, ultrabooks, netbooks and smartphones. Each of these…