Interestingly, I do have the Coexistence mode setting, but only have options for Islands, Skype4b only, and Teams only. I don't see the 'Skype for Business with Teams Collaboration' or ' Skype for Business with Teams Collaboration and meetings' modes that are mentioned in the doc. I can definitely see where those might be useful though, to. For the best Mac client experiences and an always up-to-date infrastructure, we recommend all customers migrate to Office 365. Skype for Business Server 2015 customers should at a minimum download and install the Skype for Business Server 2015 Cumulative Update version 9319.272 or higher. My coworker has a larger selection of status options. His shows In A Meeting, I do not have that option in SKYPE or in the Calendar in Outlook. I am through searching for help. For me everything is Away, Busy, Out of Office, Do Not Disturb, Be Right Back, Off Work, Appear Away but no In a Meeting or Conference. Download Skype for Business from the Apple App Store. NOTE: When searching the App Store, use the search term Skype for Business to locate the correct app. The regular Skype app will not work with your Skype for Business account. By default, your Mac will open it with TextEdit, Apple’s built-in simple text-editing app. To change that, Ctrl+click the file in question, then click Get Info. This will bring up a new window.
I personally use Skype as my default IM client and that also integrated with Outlook at home. At work, we use Skype for Business and there Outlook integrates with Skype for Business.
I recently upgraded my home computer to Office 2016 via our company’s Office 365 licensing and now Skype no longer integrates with Outlook 2016. When I log on with Skype for Business at home, I found out that it now integrates with Outlook instead.
Do I need the Home or Personal edition of Office 2016 for integration with Skype or can I somehow set which IM client should integrate with Outlook?
Both Skype and Skype for Business (previously known as Lync), Microsoft Teams as well as Cisco Jabber can integrate with the IM functionality available in Outlook. This means that you can see people’s Skype, Teams or Jabber availability, reply to an email via an IM or directly start a call or chat all from within Outlook.
When you are using Skype or Jabber and then install an Office edition that includes Skype for Business, Skype for Business is set as the default IM client in Windows. Similarly, when you are using Skype for Business and then also install Skype or Jabber afterwards, it will set Skype or Jabber as the default. When you install Teams, it (currently) doesn’t set itself as the default IM client.
It would have been nice if there was an easy way to select your IM client for Outlook straight from within Outlook or the IM client itself. Sadly, this is not the case, except for Teams, but you can still set it directly via the Registry.
IM Providers Registry key
The Registry key which stores which IM client can integrate with Outlook is:
HKEY_CURRENT_USERSoftwareIM Providers
Below this key, you’ll find several sub keys which represent the IM clients that you have installed on your system (and registered themselves as such).
In the IM Providers
key, you’ll see a value called DefaultIMApp
. This value should correspond to one of the sub keys. When you change the value of DefaultIMApp
, restart Outlook and your new default IM application and Outlook should now use that as the application for IM integration.
When you want to use Skype for Business as the default, the DefaultIMApp
value should be set to Lync
as that was the previous name of Skype for Business and that name is still being used in several places for backwards compatibility.
If you don’t want to modify the Registry yourself, you can download the zip-file below. Within it, you’ll find ready made reg-files to set Skype, Skype for Business (Lync), Communicator or Cisco Jabber as the default IM application. Simply double click the correct reg-file to automatically set the value.
When you want to use Teams as the default IM client, you can do that directly from within Teams itself. For instructions, see the Microsoft Teams section below.
Download: defaultimclient.zip
Various IM clients can integrate with Outlook but choosing a default requires a Registry fix.
Note: Changing the default IM provider also affects the other Office applications of course. For instance, when you use the Contact Card in Backstage or the comment section in Word.
Microsoft Teams
Teams allows you to set itself as the default IM client directly from within its Settings dialog.
- Click on your Avatar or initials in the top-right corner-> Settings-> section: General-> enable: Register Teams as the chat app for Office (requires restarting Office applications)
Registering Teams as the default chat app in Outlook and other Office applications.
Note: As expected, this will set the DefaultIMApp
Registry value to Teams
. The nice thing about this, is that when you don’t like it to be the default anymore, deselecting this option will set your previous chat app as the default again thanks to the PreviousDefaultIMApp
value.
Supported IM clients
Please realize that you can’t simply pick any IM client and expect its integration to work in Outlook or other Office applications. If it doesn’t offer any Office integration features, setting this key to that application will disable the Reply with IM, chat, call and on-line availability functions in Outlook.

Amongst the supported IM clients are: Skype, Skype for Business, Lync, Office Communicator 2007 R2 and Cisco Jabber. The level of integration depends on a combination of the IM client being used and the version of Outlook.
Note: Windows Messenger got discontinued so setting MSN Messenger as the default is no longer supported.
You can set the Skype for Business client for Windows to use custom on-hold music rather than Microsoft's default music.
At Indiana University, you can replace the Microsoft default with the IU Orchestra playing 'Bohemian Rhapsody'. If you want others to hear silence instead of music when you put a call on hold (for example, if you use hold during conference calls), you can use a silent sound file for your on-hold music. (Microsoft does not allow you to deselect the option to play music on hold directly.) Download either of these two sound files from IUware (noting where the file is saved), and then follow the instructions below.
Download Skype For Business Mac

Before setting up your custom on-hold music, you must have a Windows Media file with the extension .wma
. To convert .mp3
or .wav
files to .wma
, see Where to edit a sound file at IU.
To use your .wma
file as your custom on-hold music:
- In Skype for Business, click the Options (gear) icon.
- In the left pane of the 'Options' dialog box, click Ringtonesand Sounds.
- If the logged-in account is enabled for Enterprise Voice, the last option should be Play music on hold. Click Browse, and then navigate to the
.wma
file you'd like to play for people you put on hold. Click OK.
If you wish to restore the Microsoft default music at any point, you can find the file at C:Program FilesMicrosoft OfficeOffice15MEDIADefaultHold
.
Skype For Business App Mac
To learn how to perform common tasks in Skype for Business, see UniCom. Also, see Skype for Business help & learning.
Skype For Business Mac Issues
For an introduction to UniCom, including how-to PDFs and videos, seeUniCom.
