A customer has a Skype For Business setup, running on Office365 with On-Premiss Exchange server. We have a issue with disabled users who still appers in Skype for business contacts with a "presence unknown"
We have enabled "hide from address list" in Exchange admin module
In AD atribute editor msExchHideFromAddressLists = True
Deleted cached files in C:\Users\username\AppData\Local\Microsoft\Office\16.0\Lync\firstname.lastname@example.org
Deleted everything in C:\Users\USERNAME\AppData\Local\Microsoft\Office\16.0\Lync
Deleted everything in the tracing folder C:\Users\USERNAME\AppData\Local\Microsoft\Office\16.0\Lync\Tracing
Nothing works, the disabled users still appear in the contactlist in Skype