So all our groupwise sites, have the latest 2014 R2 SP1 HP2 from Dec 2016.

But on one of our sites we have a few users that come up with the 9505 error saying your post office is unavailable, The Post Office agent might not be configured for SOAP. Please contact your Systems Administrator.

BUT other users on the same post office work fine! But this user it will not work for. I don't understand how we can get that error for one user and not the others on that same Post Office.

So the post office works for 99% of it's users but two or three have this error. Any ideas?