Skype for Business Server 2015 Cumulative Updates (CU) List

With the release of Cumulative Update 0.1 (June 2015) i thought id create a Skype for Business Server Cumulative Update list and release dates.

Something i often search for with Lync 2010 and Lync 2013 and perhaps others may find helpful in the future.

Updated for CU1 Nov 2015 and renamed previous CUs are 0.x

Updated 12/12/2017 to add CU 6 for SfB Server 2015

Updated 23/03/2018 to add CU 7 for SfB Server 2015

Updated 27/03/2018 to rename CU7 to CU6HF2

Updated 01/08/2018 to add CU 7 for SfB Server 2015 (The real CU 7 )

Updated 11/01/2019 to add CU 8 for SfB Server 2015

Updated 03/04/2019 to add CU 8  HF1 / CU 9 (CU  No TBC) for SfB Server 2015

Updated 31/05/2019 to add CU9

Updated 02/08/2019 to add CU10

Updated 09/09/2019 to add CU11

For DOWNLOADS of all CUs click here

CU Number Version Number Date Download Links
RTM 6.0.9319.0 May 2015
CU 0.1 6.0.9319.55 June 2015

https://www.microsoft.com/en-us/download/details.aspx?id=47690

For DOWNLOADS of all CUs click here

CU 0.2 6.0.9319.72 September 2015

http://www.microsoft.com/en-us/download/details.aspx?id=48865

For DOWNLOADS of all CUs click here

CU0.3 6.0.9319.88 October 2015

http://www.microsoft.com/en-us/download/details.aspx?id=47690

For DOWNLOADS of all CUs click here

CU 1 6.0.9319.102 November 2015

https://www.microsoft.com/en-us/download/details.aspx?id=47690

For DOWNLOADS of all CUs click here

CU 2 6.0.9319.235 March 2016

https://support.microsoft.com/en-gb/kb/3061064
The March 2016 cumulative update adds the Active Directory Authentication Library (ADAL) feature to Microsoft Skype for Business Server 2015. For more information about ADALIssues resolved
The March 2016 cumulative update resolves an issue in which Windows 10 users who use Edge can’t join a meeting from Skype for Business Web App (KB 3095143).

For DOWNLOADS of all CUs click here

CU 3 6.0.9319.259

Added Busy on Busy Options and bug fixes.

For DOWNLOADS of all CUs click here

CU 4 6.0.9319.272 November 2016 https://support.microsoft.com/en-us/kb/3061064

Also when the MAC client was released it said this was required to enabled them to join without Reverse proxy but i cant see this listed on the KB.

For DOWNLOADS of all CUs click here

CU4 HF 1 6.0.9319.277 February 2017 https://www.microsoft.com/en-us/download/details.aspx?id=47690

Highlights

  • Fix for SfB Installer on Server 2016 ! So it wont be long now people !
  • E911 fix for non windows auth clients
  • Push notification support for iOS and Android
  • Presence and contact card updates
  • Skype web sdk update for accepting across-domain anonymous meeting join requests

For DOWNLOADS of all CUs click here

CU5 9319.281 17th May 2017 https://www.microsoft.com/en-us/download/details.aspx?id=47690

A lot of issues resolved here too many to list. Check out a summary here

For DOWNLOADS of all CUs click here

CU6 9319.510 11th December 2017 https://www.microsoft.com/en-us/download/details.aspx?id=47690

A lot of issues resolved here too many to list. Check out a summary

For DOWNLOADS of all CUs click here

CU6 HF1 9319.514 January 2018 https://support.microsoft.com/en-us/help/3061064/updates-for-skype-for-business-server-2015

https://support.microsoft.com/en-us/help/4074701/january-2018-cumulative-update-6-0-9319-514-for-skype-for-business

For DOWNLOADS of all CUs click here

CU7 CU6 HF2 9319.516 March 2018 https://www.microsoft.com/en-us/download/details.aspx?id=47690

https://support.microsoft.com/en-us/help/3061064/updates-for-skype-for-business-server-2015

For DOWNLOADS of all CUs click here

CU7 9319.534 July 2018 https://www.microsoft.com/en-us/download/details.aspx?id=47690

https://support.microsoft.com/en-gb/help/3061064/updates-for-skype-for-business-server-2015

For DOWNLOADS of all CUs click here

CU8 9319.537 January 2019 https://support.microsoft.com/en-gb/help/3061064/updates-for-skype-for-business-server-2015

https://www.microsoft.com/en-us/download/details.aspx?id=47690

For DOWNLOADS of all CUs click here

CU8 HF1 / CU 9 (CU Number tbc) 9319.544 March 2019 https://support.microsoft.com/en-gb/help/3061064/updates-for-skype-for-business-server-2015

KB is being updated as still referencing Jan 2019.

https://www.microsoft.com/en-us/download/confirmation.aspx?id=47690

For DOWNLOADS of all CUs click here

CU 9 9319.548 May 2019 https://www.microsoft.com/en-us/download/details.aspx?id=47690

https://support.microsoft.com/en-us/help/3061064/updates-for-skype-for-business-server-2015

For DOWNLOADS of all CUs click here

CU 10 9319.559 July 2019

https://support.microsoft.com/en-us/help/3061064/updates-for-skype-for-business-server-2015

For DOWNLOADS of all CUs click here

CU 11 9319.562 August 2019

https://support.microsoft.com/en-us/help/3061064/updates-for-skype-for-business-server-2015

For DOWNLOADS of all CUs click here

For Downloads of all CUs please see link above.

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16 thoughts on “Skype for Business Server 2015 Cumulative Updates (CU) List

  1. This is fantastic Martin. Microsoft frustrate me as sometimes I need to build labs for customer POCs and cannot get old versions!

    1. i dont im afraid, i never got hold of it but there has been a newer one released in March 2018 which ive just blogged and uploaded the March 2018 CU to OneDrive. Blog will be posted later today.

  2. Hello,
    Do you know all the link in the writeup links to the same page.
    Microsoft only releases the latest CU. if you do not download and save it, its gone after the new CU is out.

      1. or Perhaps create a shared drive, download it, and link your article to the corresponding folder you download the update to. often at times you find SFB resources wanting to install a previous update and cant find the update.
        I installed a new pool for a client and wanted the servers to all be on the same version.. couldnt find that CU online.

      2. Hi tola the link to my OneDrive with all cu’s to download is on the article at the top so they are there for you to download 🙂 . Hope that helps. I’ll update the download links to put to the OneDrive folders in the future. Thanks Martin

  3. hi, all.

    Good day to everyone!

    currently, we are on cu 5, can we skip cu 6-7 and directly install cu 8?

    Thanks!

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