I recently updated my certificate and pushed it out to all of my machines. I have a couple of machines though that still throw errors. I've gone through the TIDs on what certificate matters and didn't find anything that matched what I've got.

Here's what I did. I unregistered the client locally only. Then, I removed the old trusted root, installed the new trusted root and re-registered. On 99% of my machines, this worked like a charm. On the others, it gave me an extra prompt when importing the new trusted root that said something like 'are you sure you want to trust that this authority is who they say they are' and then I was prompted to accept the cert for ZEN (this didn't happen on the others). I've tried clearing the certs from the registry and file store and even doing a ZIS clear.

Any ideas?