We had a strange issue on our hosted environment on Azure with Windows 7, 10, Windows 2012 R2 and Windows 2016 RDS / Citrix servers. Users could not sign in to Office Pro with their Office 365 user credentials, to a batch of newly installed servers. They received the message when they start any of the Office applications (in the screenshots below I use Word):
We are unable to connect right now. Please check your network and try again later.
The next message users receive is:
UNLICENSED PRODUCT Most features are turned off because a shared computer license isn’t available.
As the message states: most features are turned off 🙂