Skype for Business Mac Client July/August 2017 Update

There’s a new SfB Mac client update, released 2nd of August but marked as the July 2017 update on the what’s new for SfB site,Microsoft are releasing new updates at a great pace for the Mac client.

Here’s a quick summary of the update

Lots of new features and improvement here so definitely worth upgrading, Looks like the Mac client on Lync Server 2013 are getting a number of new features including delegates, contact management and Peer to Peer sharing with SfB client and improvement but make sure you have the latest Cumulative update installed as always. Touch bar and meetings can new improvements as well.

Always two new known issues with Unified Contact Store and also ADFS 3.0 so check this out below.

Manual Install Download link

Version Number –


You can AutoUpdate or the Manual download link above.

System Requirements for your Mac

Mac OS
Skype for Business Server 2015 or Lync Server 2013
OSX 10.11 (El Capitan) or OSX 10.12 (Sierra)
Outlook Mac build 15.27 (161010) required for Outlook integration

What’s New

Support for multiple emergency numbers
Skype for Business on Mac now supports multiple emergency numbers when configured by your admin.
Delegates can schedule meetings on behalf of delegators
Outlook for Mac will now allow a delegate to schedule an online meeting on behalf of a delegator. This new feature has a limitation that the online meeting is created using meeting ID and policies of the delegate, not the delegator. This limitation will be removed in future versions of Skype for Business on Mac and Outlook for Mac.
NOTE: You must install the Outlook update version 15.36.170702 or later to enable this feature.
Delegator and delegate features for Lync Server 2013

Delegator and delegate feature are enabled for Lync Server 2013 Cumulative Update 9: July 2017.

  • Users can now add delegates to "My Delegates" group in contact group and set call routing preferences to delegates.

  • Delegates can see who has made them a delegate.

  • Delegates can make calls on behalf of a delegator.

Contact management for Lync Server 2013
The ability to add and remove contacts and create and delete contact groups is enabled for Lync Server 2013 Cumulative Update 9: July 2017.
Peer-to-Peer desktop sharing with Skype for Business 2016 users for Lync Server 2013
Peer-to-peer desktop sharing between Skype for Business on Mac and Skype for Business 2016 on Windows is enabled for Lync Server 2013 Cumulative Update 9: July 2017.


  • Increased the touch bar buttons size and spacing when in a meeting.

  • Fixed an issue that prevented all dial-in numbers from being displayed when scheduling an online meeting in Outlook.

  • Fixed an issue where hanging up from a meeting while sharing a PowerPoint presentation ended the presentation for everyone in the meeting.

  • Fixed an issue where the user could be automatically signed in even when Keep me signed in is unchecked.

  • Fixed accessibility issues with keyboard navigation in the Calls and Meetings tabs.

  • Fixed an issue where a user could not see screen sharing if two users tried to start sharing at the same time.

  • Fixed an issue where some check boxes were not displayed correctly in right-to-left languages.

  • Fixed an issue where an error message was not displayed when the Exchange password was needed.

  • Fixed a crash issue when the user maximizes, unmaximizes, and then moves the window while viewing screen sharing in a meeting

Known Issues

Latest issues added

Contact Management, including Delegate Management, is not supported on Lync Server 2013 if Unified Contact Store is enabled Users on Lync Server 2013 cannot modify their contacts list in Skype for Business if a user account is enabled by the Skype for Business administrator for the Unified Contact Store for Exchange. Users can make changes to their contacts list in Outlook.

Skype for Business on Mac fails to sign-in

(Skype for Business Server Online, Exchange Server Online, Identity managed on-premises with ADFS 3.0 and WIA authentication enabled for wiasupporteduseragents-Mozilla/5.0)


  1. Remove “Mozilla/5.0” from the WIASupportedUserAgents parameter in AdfsProperties. Essentially, you will need to:

    1. Run Get-AdfsProperties | select wiasupporteduseragents and get the output.

    2. Then remove _only_ “Mozilla/5.0” from the output.

    3. Then run Set-AdfsProperties -WIASupportedUserAgents with the output from step b.

  2. Revert back to using Lync for Mac 2011.

NOTE: Skype for Business on Mac gets represented by the underlying ADAL library as user agent Mozilla/5.0 (no option to set it from the app), and Windows Integrated Authentication is generally used only for Windows clients and therefore not supported by ADAL library on Mac.


SfB Online / Lync Server / SfB Server Requirements

For best experience SfB Online is recommended for full feature set but for on premises deployments its the following

Client Functionality and Client Comparison

Also worth checking out the Client comparison tables for Skype for Business Server 2015 with the new update so you know differences between windows and Mac clients.

Interesting it now notes separate client comparison for Skype for Business Server 2015 and Lync Server 2013

SfB Server list –

Lync Server 2013 list –



Known Issues


What’s New


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