The message just disappears into the ether. Similarly User B does not get a missed message or offline message in their Exchange mailbox to say that User A had contacted them. When User A sends User B an IM the message looks to have been sent as we receive no error within the chat window to tell us otherwise. User B however, does not see User A’s presence and appears Unknown. To User A, User B looks to be using Skype for Business and is given the perception that they can send IMs or make P2P audio and video calls.

In this scenario, User A sees the presence of User B in their Skype client as Available, or whatever presence is set within User B’s Teams client. User A is on Office 365 Tenant 1 and User B on Office 365 Tenant 2. In this scenario, I have seen one user (User A) using Skype for Business and another (User B) using just Microsoft Teams and not signed into Skype for Business client.

Tis is especially so when users decide that they don’t need the Skype client. As people and organizations start to adopt Microsoft Teams for their day to day communication and leverage the new features such as guest access there are a couple of scenarios that I have come across that could potentially lead to people scratching their heads.

Skype for business missed im