Category Archives: Instant Messaging

Step by Step Enabling Instant Messaging on Outlook Web App (OWA) with Skype for Business Server 2015

Integrating Skype for Business Server and Outlook Web App adds instant messaging and presence to Outlook Web App and enables your unified contact list to be shared between Outlook Web App and Skype for Business.

After server-to-server authentication is in place (check another post of mine here) we then can enable Instant Messaging from OWA

Here are a couple of things to know before starting:

You must verify that the Unified Communications Managed API 4.0 Runtime has been installed in your Microsoft Exchange Server 2013 backend server. You can do this by looking for the existence of the following registry value:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchange OWA\InstantMessaging\ImplementationDLLPath

If you have installed the Microsoft Exchange Unified Messaging Call Router service and the Microsoft Exchange Unified Messaging service on the same computer then there is no need to create a trusted application pool for Outlook Web App. (This assumes that the server in question is hosting a SipName UM dial plan.) Skype for Business Server 2015 can autodiscover any Exchange servers that host a SipName UM dial plan and create a Known Server List. I must create a Skype Continue reading


Filed under Exchange 2013, Instant Messaging, OAuth, Outlook Web App, Skype for Business Server 2015, Step by Step