Lync Management Shell not working – “a certificate was explicitly revoked”

The other day I ran into a strange issue: When opening Lync Management Shell on one Front End, I was prompted to trust “Microsoft Corporation” as a Trusted issuer. Now, immediately this got me worried, although the certificate details looked legitimate. After some review, I chose the “Run once” option to see what happened next, only to be prompted over and over again. By now I got fed up and hit “Never run”. Bad mistake, as the Management Shell or import-module Lync in Powershell now would not work any more.

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Lync Phone Edition deployment – notes from the field

Lync Phone Deployment is pretty straight forward, and the mystery of DHCP options is pretty well documented on both Technet article¬†and in Jeff Schertz’s excellent blog post on the matter. I have done a few of them, and they have all gone smoothly. Yet, a recent deployment really had me “rolling up my sleeves” to get it working. Here are some of my experiences, and what to look out for when setting it up.

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