Skype for Business Cloud PBX with PSTN Calling in France GA now

Bonjour!!, great news for enterprises in France, Cloud PBX with PSTN Calling in France is in GA now.

What is Cloud PBX with PSTN Calling?

Cloud PBX is offered from Skype for Business Online and PSTN Calling is an add service that provides telephony functionality and Microsoft are the PSTN Carrier. Microsoft a telephone number and PSTN calling services and billing. PSTN calling provides users the ability to make and receive phone calls outside of the organization. Cloud PBX with PSTN CAlling does not offer the same functionality as an on premises deployment of Skype for Business Server with Enterprise Voice with on premise PSTN providers so be aware of this.

Microsoft are expanding the countries they provide PSTN Calling and now France has been added so Microsoft have four countries so far and are expanding.


Some highlights on the information ive found so far on PSTN Calling for France

From Microsoft’s Countries and regions that are supported for Skype for Business Online PSTN Services web page here

France is now listed below so in total we now have four countries available Smile



Total Minutes available for France

  • 1200 Domestic
  • 1200 Domestic or 600 International minutes (which ever is reached first per month)


Thought id take a peck on on tenant and see what numbers are available.

I can now select France and they have a great selection of cities available for numbers which is great.






Overall another great step in expanding Cloud PBX from Microsoft i think.

Where next for PSTN Calling from Microsoft ?

On currently PSTN Calling in Spain is in Preview so likely this will be soon as well.



Skype for Business Mac Client CU1 Update Summary

Yesterday Microsoft announced Cumulate update 1 for the Skype for Business Mac client which is very welcomed I’m sure ! Check out blog post from Msft here

So what’s new features and improvements has this brought to the Mac client I’m sure is the number 1 question !

But also lets not forget known issues and workarounds, one which is interesting is with single / tabbed conversations windows not available, this seems to be issue with the client not being able to detect if Server-Side conversation history is enabled and it wont default to a single windows experience. It does note to check preferences in the client. More details are below.

Tabbed conversations issue is also noted that it was allowed in previous client version to be used even if the back end infrastructure didn’t allow it previously and some users had message delivery failures and has resulted in this option being removed for some users so user may see conversation windows differences. Microsoft noted they are looking into this.

To use tabbed conversation in single windows its looking like you need Skype for Business server 2015 / SfB Online with Server-side conversation history enabled. To enable server side conversation history you need exchange 2013 or higher / Exchange Online. Also for SfB Server users server side conversation history has be enabled as well. So admins need to check this as well.

Requirements for single/tabbed window experience:

  • Skype for Business Online or Skype for Business Server 2015

  • Server-side conversation history enabled.

Features Added in CU 1

Features Added Details
Manage contact groups Skype for Business Online and Skype for Business Server 2015 users can now add and remove contact groups and enterprise distribution groups to their contact list.
Tag contacts for status change alerts Skype for Business Online, Skype for Business Server 2015, and Lync Server 2013 users can tag a contact so that they are alerted any time the status of the contact changes to online.

Improvements with CU 1

Improvements Details
Messaging Improved sender experience in the case when a recipient is unable to respond to incoming messages.

Fixed chat notification issues — In some cases, new chat notifications were not marked because the client assumed the user read them already.

Meetings Numerous fixes and reliability improvements so you get a more stable meeting experience.
General Calendar syncing issues fixed so at start up meetings can be retrieved correctly.

Sign-in bug fixes — some account types were not able to sign in.

Known Issues

Full list of Known Issues here

CU 1 Known issues highlights

Issue Details
Single/tabbed window experience not available

By default, if your topology meets the following requirements, all conversations will be shown in a single/tabbed window. However, there are cases when the client can’t detect if server-side conversation history is enabled and it will not default to single window view. This can be remedied by updating settings under Preferences.

Requirements for single/tabbed window experience:

  • Skype for Business Online or Skype for Business Server 2015

  • Server-side conversation history enabled.

Troubleshooting if single window mode is not available, check the following:

  • Preferences > General > Show conversation in separate windows is unchecked.image

E-911 with ADFS not supported This is a known issue and will be addressed in a future update of Skype for Business Server 2015.
Menu to add/rename/delete contact group are disabled right after adding a new group Workaround: Select any contact or group, and the menu will be re-enabled.
Expand/Collapse Group Chevron icon is out of sync with the list of contacts after minimize/maximize Skype for Business Workaround: Click on the chevron to correct the icon.
Adding a distribution group that has more than 100 contacts will result to 100 contacts only Workaround: To view the full member list of distribution group, use Outlook to expand the group.

How do i get the update ?

Two methods,

  • Either using the Microsoft AutoUpdate (MAU) if you have already deployed the SfB Mac client already Smile
  • Or for new users a manual download via Microsoft download centre here

Client Version number

With CU 1 –

Do i need to update my Skype for Business Server or Lync Servers ?

It does note under the manual download detail that’s its recommended for the best user experience to ensure customers are running the latest Server side cumulative updates which are November 2016 for both SfB and Lync Server 2013. Or it mentions move to Office365 for always up to date infrastructure which made me smile. Downloads link are below.

  • SfB Server 2015 (9319.272 ) – November 2016 CU4 here
  • Lync Server 2013 (8308.974) – November 2016 CU8 HF1 here
  • Lync Server 2010 – SfB Client not supported im afraid so it suggests Mac 2011 client only.

Also i have found info on the mobility requirements on the known issues page which mentions the latest CU updates for SfB Server and Lync Servers and notes mobility is not required if the latest CU is applied.

Without Skype for Business Server 2015 CU4 (build 9319.272 or higher, now available) or Lync Server 2013 CU8 HF1 (build 8309.973 or higher, now available), Skype for Business on Mac requires Mobility enablement on the server side. After updating to builds 9317.272 or 8309.973, Mobility enablement will no longer be required.


Here’s some screenshots of Updates and improvements

MAU Update process for SfB Client

I had a new update for the MAU so updated this first.





It then opened and i checked for updates.





I quit the Skype for Business client as it was running in the background and selected retry



It checks for more update and its done.



You can check About Skype for Business for the new version



Improvements Screenshots

Contacts – Create new groups from menu


Add a name



Add to Contact list


You can move contacts by right clicking and moving


Had a bit of an issue when i tried to delete group by right click and option greyed out


Selected group and used Contact menu option and greyed out


this was an empty group so i thought lets assign a user and see what happens that didn’t work. I got an error message so i signed quit the client and restarted and its ok now. I did add a new group previously with the same name and got an error so perhaps this caused it. I did try to recreate the duplicate group name error and test deleting groups again after restarting but all was ok.

I tried again and it was ok.


Add Group with Same name i get error.



Tag for Status Change

Right click on contacts and you can select tag.


Once tagged theres a tick


Separate Conversations

It does seem like separate conversations is happening and im using SfB Online with Exchange Online.


Checked preferences



Regionally Hosted Meetings Microsoft Skype meeting broadcast summary

Few notes from the Skype meeting broadcast from Microsoft on Regionally hosted meetings.

This is big for Office 365 and Skype meetings in Skype for Business Online as currently as all Skype for Business Online users are homed in one location where your office 365 tenant is. For example if you tenant if located in Europe and you have some users in APAC, when the APAC users schedule meetings these meetings are hosted on servers in Europe which is not optimal for media and is subject to network delays, packet loss and jitter and can result in reduced call quality.

Coming soon administrators will have the choice where users are located so users and meetings can be hosted regionally by assigning their users to different Office 365 datacentres. I think this is a great step forward especially for multi national businesses. Customers will still have a single tenant but will multi region support and flexibility to move users. There are a few points to note when moving users noted and below and also customers need to ensure their network is configured optimally to route traffic to the data centre in their region.

Data centre locations are shown below.


“Its more than just meetings” said Jamie Stark !

“Clearly the place where we see greatest impact”

Its still a Single tenant but with multiple data centre support and users can be moved between data centre. “Closer is better” was the phase.

meetings get better with regionally support

Example of todays architecture.


Contoso HQ is in LA but they have an Office in Sydney, Sydney users log into North America datacentre and have all their meetings hosted in NA.

Also noted in the diagrams is a second option some customers arae doing today and routing Sydney users internet break out across their WAN and then onto the NA datacentre. With regional DC support this architecture will not be optimal and will require changes to ensure traffic is routed regionally to the closest datacentre.

Cloud previously has one place for everything, now you can have your users in Australia data centre.

SfB online is in 20 Data centres now!

Below the Office 365 Datacentre is added for the customers tenant.


The admin moves users to Australia datacentre and the customer needs to ensure local internet breakout as shown below, this is key! So network architecture is key as well to ensure optimal routing to the local data centre.


This is the scenario that customer do not want as it wont be optimal as Sydney users are routing over the WAN to LA then back to Australia O365 datacentre.


Ensuring the network routing is optimal is key and the Skype operation framework will help with planning.

MCU cascading / Barbelling question from audience 

Organiser in Sydney, meeting hosted in Australia, for LA users they can connect in NA data centre and connect the media inside Microsoft network to Australia.

So custpmers route traffic to the local data centre and Microsoft will route all the media within their network between datacentres. This was noted to come next year.

Getting traffic locally in the cloud and route inside of Microsoft cloud to optimise meetings. This is great !

Microsoft will take on the bandwidth for you using their cloud. How do we get great regional access is key for customer to consider.


How do customers move forward today ?

This is preview now, sign in at under NDA section

Out of preview end of this calendar year.

Limited availability to start with

Premier customers must call Microsoft support at end of the year,customer works with Microsoft to enable tenant to mutli region as listed as step 1 below.

Setting up


Microsoft Premier support will complete item 1

The customer must complete item 2

Hybrid – running SfB server and online you can move users with item 4.

What happens to existing meetings when moving users ?

How are meeting urls affected when moving? They require updating, today you use meeSfB ting migration tool as an end user to update previously scheduled meetings for example when adding pstn conferencing to your tenant or moving data centres /sip domain. Ive done a blog post on this tool here

SfB admins don’t love this as end user uses this tool, with the cloud if your exchange mailbox is in Exchange Online Microsoft can do this for you with their new Meeting migration SERVICE !

No longer a tool for end users, its a process on the back end ! “The Power of the cloud”

Exchange Online as mailbox provider only.

With Exchange Server on premises you have to still use the meeting migration tool. Another reason to move exchange to the cloud.


Also available this calendar year !

~This was branded the Meeting Migration Service Not tool !!!🙂

Customers don’t have to be a regionally hosted meeting enable on tenant. Exchange must be on the cloud so meetings can be updated automatically in the back end.

One note If moving large numbers of users then new meeting invites will be sent out so admin must communicate this otherwises users may come in the next days and find a lot of meetings invites and wonder whats going on.


How regionally hosted meetings impacts ACP ?

ACP are third parties audio conferencing providers such as intercall, BT, PGi. ACP is not the Microsoft PSTN conferencing option.

The third party ACP users still needs the Meeting migration tool. Third party ACPs or on premise require the tool.

Second point for ACP tenants admins need to make informed choices when moving users as ACP providers may not be data centre locations where you can move users. If you move the users then ACP may break.

Microsoft will publish DC locations where ACP providers are located so customers are aware as not too move users where ACP providers aren’t located.


Tell me about Cloud PBX and On premises PSTN connectivity for regional hosted meetings users?

When released broad range of testing will be completed for CCE users. CCE users will have to wait till spring to use this. CCE will be available after extensive testing is completed.

Event Link to view recording whilst available.

Next meeting broadcast from Microsoft is on the new Mac client !

Skype for Business Meeting / Migration Update Tool

This tool has been available for some time and most often used to update meeting urls when migrating users from Lync Server or Skype for Business Server to Skype for Business Online. Also useful for adding PSTN conferencing details to SfB online meetings when enabling PSTN conferencing on your tenant / users.

When users move to SfB online their scheduled meetings include a Skype meeting url that must be updated as the user has moved to Skype for Business Online servers using different meeting urls.

All meetings must be updated after migration and Microsoft currently supply a tool for this in MSI form. Expecting users to do this themselves could cause issues and raised support requests. Other options are to manually reschedule and update your meetings.

This tool will find any meeting, update with new meeting url and also send out an invite to all participants for you. Sounds good anything to make life easier would be nice.

Its also noted being used to update all of your existing meetings after you are enabled for PSTN Conferencing in Skype for Business Online so you can add dial in details. It will update the Conference URL of the meeting as the phone number and conference ID that can be used to join it via PSTN Conferencing.

I believe Microsoft are looking at automating this into SfB Online as expecting the end user to use tool could end up with more work to your helpdesk and deployment people.

I came across an on premise sip address change and thought id try it out in this scenario as well and here’s my experiences of the tool.


Supported Operating System, SfB Lync Client and .Net Framework

Supported Operating Systems
Windows 10 , Windows 7 Service Pack 1, Windows 8, Windows 8.1

Supported Outlook clients
– Outlook 2013
– Outlook 2016

Supported SfB /Lync clients
– Skype for Business 2016
– Skype for Business 2015
– Lync 2013

.NET framework 4.5 or above

Note Outlook 2010 and Lync 2010 are not listed so this tool is not available for 2010 users.

Client Downloads

I first checked the prereqs listed above and meet them so i can use the tool.

Grab the client, for large deployment perhaps rollout the msi to the client instead of manual install due to admin rights issues etc.

64bit –


Microsoft Instructions

Install Client







Launch Skype for Business Meeting Update Tool

Manually open and run tool



Great its found me.


Found i had two reoccurring meetings that require updating Smile


Click update


Both meetings updated marked in update status


After clicking finish run tool again and you should see the following.

“Your meeting links are up to date. You’re good to go!”


I updated my meetings, got accepts to the invites that were automatically sent and everyone joined the meetings fine so it worked a treat.

After meeting updates are all done you can remove.


Manual install for me using Open programs and features in control panel


Right Click and uninstall

For mass removal an automated removal of the client would be better. There’s no harm leaving it but once its used and updates meetings it mostly likely not be used again unless future sip domain changes or move to SfB online.

Skype for Business Server 2015 Smart Setup

Not seen this working before, each time i try and use it and it was failing😦 i checked Internet connectivity and that all good but it never worked so i was applying CUs after deployment. Not sure if i was the only one here ? so interested to hear what other peoples experience has been.

What is Smart Setup ?

Smart setup allows Skype for Business updates to be installed as part of
Skype for Business Server setup process from Microsoft updates

Smart Setup will:

  • Check with Microsoft update for Skype for Business updates
  • Download the updates
  • Install them (prior to finishing the installation process)

So anything to save times and customer times looks good to me.


Today i was deploying a FE in my lab so i thought why not it worked so thought id share it Smile




This looked very promising so i thought where does it save and extract this to so i went on a little look around and found something that looks promising.

In C:\ProgramData\Microsoft\Skype for Business Server\Deployment\patchcache\6.0.9319.0 theres a patchcache folder Smile




I downloaded CU4 and extracted the CU using skypeupdateinstaller.exe /extract all and compared files unfortunately it looks like CU4 was not automatically downloaded but its quite new so ill check CU3 and work backwards.



CU Downloaded copy on sever


So i went on and extracted CU3 to compare and this was a match Smile


i checked each components and compared details.


So it had automatically downloaded CU3 for me so i continued the setup. happy days.

When running setup using SfB Deployment wizard i spotted patching “EnterpriseWebApp.msi”


Skype for Business Server 2015 – November 2016 Cumulative Update

This morning i saw that CU4 was released for Skype for Business Server, i knew from the MAC client release there was a new CU coming very soon for Skype for Business and Lync Server 2013. I don’t see anything for Lync Server 2013 yet though. But it seems there a new CU for Skype for Business Server CU4 6.0.9319.272

When looking over the improvements and fixes i don’t see anything related to the MAC client specifically but i do this mentioned “This update enables Location-Based Routing to support the Skype for Business mobile clients” as the MAC client is really a mobile client perhaps this resolves the issues with E911 support for the MAC client. Nothing mentioned about removing the dependency of a reverse proxy for the MAC client and having mobility deployed. Ill have to do some testing i think.

Update 23/11/2016

Whilst reading about the Mac client CU1 update i stumbled across this, which seems to suggest the dependency on mobility is removed for SfB Server and Lync Server 2013 with the latest CUs.

Without Skype for Business Server 2015 CU4 (build 9319.272 or higher, now available) or Lync Server 2013 CU8 HF1 (build 8309.973 or higher, now available), Skype for Business on Mac requires Mobility enablement on the server side. After updating to builds 9317.272 or 8309.973, Mobility enablement will no longer be required.

Skype for Business Server CU4 details

Improvements and fixes in the November 2016 update

This update enables Location-Based Routing to support the Skype for Business mobile clients. It also fixes the following issues:

Fix and Improvement Symptom / Cause
  • 3203706 Long silence when you dial into a meeting in Skype for Business Server 2015 that has name recording disabled

Assume that a Microsoft Skype for Business Server 2015 server is experiencing high latency. In this situation, when you dial into a conference, you experience long periods of silence. This is caused by the latency on file I/O operations to the server.
Additionally, after you turn off name recording by running the Set-CsDialInConferencingConfiguration -EnableNameRecording $false cmdlet in this situation, you continue to experience the same issue.

  • 3203153 You experience intermittent message delivery delay or failure in Skype for Business Server 2015 Persistent Chat rooms
Typically, this issue occurs in a large Microsoft Skype for Business Server 2015 environment.   
This issue occurs because a certain task hits an exception that delays regular messages processing or leads to intermittent "503 Service Unavailable" error on Persistent Chat servers.
  • 3203152 Lync Phone Edition telephones cannot put a call on hold if "Music on Hold" feature is disabled
Assume that you set the EnableClientMusicOnHold parameter to false in a Microsoft Skype for Business Server 2015 client policy. When you use a Microsoft Lync Phone Edition telephone, you cannot put a call on hold.
  • 3203148 Front End server of Skype for Business Server 2015 crashes upon restart
Assume that you apply a normalization rule to the address book, and then restart the Front End server of Microsoft Skype for Business Server 2015. In this situation, the RTCSrv.exe service crashes. 
  • 3203707  Japanese characters in the subject of a missed call notification message are garbled

Consider the following scenario: 

  • Microsoft Skype for Business Server 2015 is integrated with Microsoft Exchange Unified Messaging (UM). Both user A and user B are UM-enabled.
  • User A sends user B an email message that contains Japanese characters in the subject.
  • User B receives the email message, and then moves the mouse point over user A.
  • User B makes a call to user A from the drop-down list next to the phone icon.
  • User A doesn’t answer the call and receives a missed call notification email message.

In this scenario, Japanese characters in the subject line of the missed call notification email message are garbled.

This issue occurs because the user notification XML file that’s sent by Skype for Business Server is encoded by using US-ASCII instead of UTF8.

There seems to be quite a few components are require updating with CU4


Download Link


Skype for Business for Mac available for download – Quick Summary of Client

First tweet i read this morning from Randy Chapman was the news that i think all Mac users have been waiting a long time for. There is a Skype for Business Mac Client !!!! thanks Randy for the heads up as always. I had a mac for a years but i don’t use it alot to be honest im mainly a windows fan and use my mac once in a while.

Thought spent i little time collecting some information into a blog post on the mac client and sharing my install of the client and a quick look around.

Also Iain Smith (MVP) talks about the Mac client in the Skype show episode 10 here

Microsoft client Download link

Points to Note before you download the client.

System requirements for your MAC to use Skype for Business

  • OSX 10.11 (El Capitan) or OSX 10.12 (Sierra)
  • Outlook Mac build 15.27 (161010) required for Outlook integration


Office 365 and Lync / Skype for Business Server topology

Microsoft are recommending to get the latest and greatest to move to Skype for Business Online but that not an option for everyone. Cheeky Msft.

For on premise bad boys Smile Looks like there will be new CUs for SfB Server and Lync Server to remove requirement for mobility to be deployed and also to support E911.

  • Skype for Business Server 2015 or Lync Server 2013
  • 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 (coming soon)
  • Lync Server 2013 Cumulative Update version 8308.973 or higher  (coming soon)
  • Unfortunately Lync 2010 Server – Lync Server 2010 is not supported –   There users will have continue to use the Lync for Mac 2011 client.


Mobility Requirement and Enablement

The Mac client works like a mobile client so you need mobility enabled but I also noticed the below so it looks like there will be a number CU released soon for SfB server and Lync Server which allows the Mac client to work without mobility being enabled. This is a major dependency.

  • E-911 support requires Skype for Business Server 2015 CU4 (build 9319.272 or higher, coming soon) or Lync Server 2013 CU8 HF1 (build 8309.973 or higher, coming soon).
  • Without Skype for Business Server 2015 CU4 (build 9319.272 or higher, coming soon) or Lync Server 2013 CU8 HF1 (build 8309.973 or higher, coming soon), Skype for Business on Mac requires Mobility enablement on the server side. After updating to builds 9317.272 or 8309.973, Mobility enablement will no longer be required.

Licence Considerations for SfB Mac Client courtesy of Lync Dude

Features and Functionality

The Mac client still doesn’t have the same level of features as the Windows based client unfortunately. This i can only see being worked on on future releases. I think Mac users will be very happy to have a new client but still feel they are a little behind with feature set.

This is what’s missing and not available currently

Presence features

  • View status based on calendar free/busy information
  • Add a custom location
  • Use a photo from any public site for My Picture
  • (not available in Skype for Business Online)


  • Pre-populated Contacts list
  • Modify Contacts list
  • Tag contacts for status change alerts
  • Control privacy relationships
  • Manage contact groups
  • Search for Response Groups
  • Display recent contacts group
  • Sort contacts by Group, Relationship, or New (people who’ve added you to their Contacts list)
  • Sort contacts by Status (availability)

IM Support

  • Log IM conversations in Outlook (If server side conversation history is turned on.) So it needs Exchange 2013, 2016 or online to use.
  • Use prepared conversation templates
  • Skill search (with SharePoint Server integration)
  • (On-premises Skype for Business Server and on-premises SharePoint 2013 are required for skill search.)
  • Persistent Chat (Group Chat) integration
  • (not available for Skype for Business Online)
  • Escalate a Persistent Chat room to a Skype for Business Meeting with one click
  • (not available for Skype for Business Online)
  • Inline pictures of sender and receiver in IM window
  • Inline pictures of sender and receiver in IM window
  • Send ink messages
  • Receive ink messages


  • Peer-to-peer video-based screen sharing
  • Share a program (if enabled) (View Only)
  • Add and present Microsoft PowerPoint files
  • Navigate Microsoft PowerPoint files
  • Add and edit OneNote meeting notes
  • Use a whiteboard
  • Conduct polls
  • Upload files to share with others
  • Create public meetings with static meeting IDs from Outlook
  • Q&A Manager

Voice / Telephony

  • Manage team call settings
  • Manage delegates
  • Initiate a call to a Response Group
  • Support emergency services (E9-1-1)
  • Make calls on behalf of another contact (manager/delegate scenario)
  • Handle another’s calls if configured as a delegate
  • Manage a high volumes of calls
  • Call park
  • Group call pickup

Recording Support

  • Client-side recording of audio, video, application sharing, desktop sharing, and uploaded content
  • Client-side recording of file transfers, shared OneNote pages, and PowerPoint annotations
  • Select preferred recording resolution

Archiving, compliance, and logging support

  • Client-side archiving of audio, video, application sharing, desktop sharing, and uploaded content
  • Client-side archiving of file transfers, shared OneNote pages, and PowerPoint annotations
  • (unavailable in Skype for Business Online)
  • Access sign-in logs from Skype for Business icon in the task bar


MAC Install instructions screenshots of client install below

    To install Skype for Business on Mac:
    1. Click the Download button.
    2. Click Save to copy the disc image file to your computer.
    3. Double click the PKG image file.
    4. Follow the on screen instructions.


Known Issues and there’s a few of them

As the Skype for Business Mac client was built from the ground up there’s a number of known issues at the moment.

Big items include no E911 support and you have to have mobility deployed including reverse proxy to sign in as the Mac client works the same as a mobile client. So internal clients need to sign in via the reverse proxy so go out side the network and come back in. Not ideal but it does look like this is being worked on for the next CU or SfB and Lync Server 2013. You also need an edge server for media relay.

Modern Authentication

When i tired to sign in i had to disable two factor authentication on my office 365 for the client to sign in. I couldn’t see this listed but may be one to watch out for.




Outlook integration

Requirements for Skype for Business and Outlook integration on Mac:

· Mac Outlook version 15.28 or later is required.

· Skype for Business must be running.

· Same user account needs to be signed into Outlook and Skype for Business.

Troubleshooting Outlook integration in case Contacts don’t show presence, online meetings fail to schedule, or there is no dial-in information in meeting invitation:

1. Ensure the user account is the same in Outlook and Skype for Business.

2. Restart Outlook.

3. Reinstall Skype for Business on Mac.

4. Perform clean uninstall of Lync 2010. See How to Perform a Clean Uninstall of Lync for Mac 2011 for more information.

5. Ensure Skype for Business is running and signed in.

Side-by-side installation

Side-by-side installation of Skype for Business and Lync is not supported on Mac. We recommend that you perform a clean uninstall of Lync for Mac 2011 prior to installing Skype for Business.

Cannot sign in to Skype for Business

Some Lync profiles might be different from Skype for Business on Mac profiles and can cause a discrepancy. See How to Perform a Clean Uninstall of Lync for Mac 2011 for more information.

Multiple prompts to leave meeting when pressing the hang-up button on a UC USB device

This is a known issue due to signaling with some USB devices and will be addressed in future updates.

E-911 support

Requirement: The minimum server version is Skype for Business Server 2015 CU4 (coming soon) or Lync Server 2013 CU8 HF1 (coming soon).

Issue: Skype for Business on Mac currently does not support showing a location in the UI, entering a manual location, or multiple emergency numbers. See Plan for emergency services in Skype for Business Server 2015 for more detail.

Mobility Policy required

With the release of Skype for Business Server 2015 CU4 (coming soon) and Lync Server 2013 CU8 HF1 (coming soon), we will support Skype for Business on Mac as a desktop application. This means that having a mobility policy assigned to Mac users will not be required. Until these server updates, Mobility enablement on the server side is required.

Accepting incoming call

The call button to accept incoming calls is working for the following devices using Lync for Mac while it doesn’t work on Skype for Skype for Business on Mac.

· Polycom CX300 Desk phone

· Jabra Bis 2400 II CC, headphone

· Jabra Speaker 510 USB speaker

· Jabra Evolve 65 (Bluetooth dongle)

· Jabra Evolve 65 (USB cable)

Hold or resume the current call

The hardware hold button works for the following devices for Lync for Mac while it doesn’t work on Skype for Business on Mac.

· Polycom CX300 Desk phone

· Jabra Bis 2400 II CC, headphone

· Jabra Evolve 65 (Bluetooth dongle)

· Jabra Evolve 65 (USB cable)

Can’t see users’ Skype for Business Presence in Outlook 2016 for Mac

If you have Lync for Mac 2011 installed on the same Mac device, Lync for Mac might have changed the configuration. Recommend that you reinstall Skype for Business on Mac.

Received “We couldn’t send this message” error even when the messages are received by others

If you are using Skype for Business Server 2015 or Lync Server 2013, check if the following configurations are enabled:

· For Skype for Business Server 2015, enable Server Side Conversation History. Set the value for EnableIMAutoArchiving to True or False on Client Policy.

· For Lync Server 2013, set the value for EnableIMAutoArchiving to False on Client Policy.

Our teams are working to address these issues in the next cumulative update of Skype for Business on Mac.

When opening the calendar tab in Skype for Business, an Exchange credential dialog box appeared

You might see this error if your UPN and SIP addresses do not match, and if AllowSaveCredentials is set to False on Mobility Policy.

Workaround: Set AllowSaveCredentials to True on Mobility Policy.

Features not available in this release

See the Skype for Business on Mac column in Client comparison tables for Skype for Business Server 2015.

Release Notes


Install Screenshots and walkthrough

Download client from link at top of page, click download.


client added to downloads on Mac


Open .pkg file and follow install









After install the office updater launches and you can set update options and it will check for updates.







After updates complete you can open SfB client on Mac Smile




You can add advanced options if required.



On first sign in i couldn’t sign in and i wondered if the SfB mac client doesn’t support 2 factor authentication / modern authentication. I went to Office 365 tenant and disabled two factor on my user account.


After disabling i was able to sign in ok.

So i don’t think the SfB mac client supports modern authentication yet. One to watch out for.




Client Look around

  • Chats tab
  • Click on chat to get more information on right panel


  • Meetings



Calls Tab



Conversation Window



Tabs in top right corner




Contact compact list like windows client


Nice to be able to pause iTunes



Meet now

In top bar.


Desktop Sharing – Coming Soon:

(this feature is in preview and is not in the initial general release client i believe)


Change Presence


Colour Scheme – white and a different shade of blue

The MAC client users a different colour scheme but that appears to be changing for the windows client see below.