The following is a list of Exchange Cumulative Updates and Security updates for Exchange 2019 and Exchange 2016 (Scroll down for Exchange 2013 and Exchange 2010 ) as of September 14, 2020.

Exchange 2019

• Cumulative Update 6 for Exchange Server 2019 (KB4556415, 06/16/2020) – https://support.microsoft.com/en-us/help/4556415/cumulative-update-6-for-exchange-server-2019
• Exchange 2019 CU6 Security Update (CVE-2020-16875, KB4577352) – https://www.microsoft.com/en-us/download/details.aspx?id=102012
• Cumulative Update 5 for Exchange Server 2019 (KB4537677, 03/17/2020) – https://support.microsoft.com/en-us/help/4537677/cumulative-update-5-for-exchange-server-2019
• Exchange 2019 CU5 Security Update (CVE-2020-16875, KB4577352) – https://www.microsoft.com/en-us/download/details.aspx?id=102015
• Cumulative Update 4 for Exchange Server 2019 (KB4522149, 12/17/2019) – https://support.microsoft.com/en-us/help/4522149/cumulative-update-4-for-exchange-server-2019
• Cumulative Update 3 for Exchange Server 2019 (KB4514141, 09/17/2019) – https://support.microsoft.com/en-us/help/4514141/cumulative-update-3-for-exchange-server-2019
• Cumulative Update 2 for Exchange Server 2019 (KB4488401, 06/18/2019) – https://support.microsoft.com/en-us/help/4488401/cumulative-update-2-for-exchange-server-2019
• Cumulative Update 1 for Exchange Server 2019 (KB4471391, 02/12/2019) – https://support.microsoft.com/en-us/help/4471391/cumulative-update-1-for-exchange-server-2019

Exchange 2016

Exchange 2016 CU17 (06/12/2020):

• Exchange 2016 CU17 (KB4556414) – https://www.microsoft.com/en-us/download/details.aspx?id=101448
• Exchange 2016 CU17 Language Packs (06/12/2020) – https://www.microsoft.com/en-us/download/details.aspx?id=101449
• Exchange 2016 CU17 Security Update (CVE-2020-16875, KB4577352) – https://www.microsoft.com/en-us/download/details.aspx?id=102013

Exchange 2016 CU16 (03/18/2020):

• Exchange 2016 CU16 (KB4537678) – https://www.microsoft.com/en-us/download/details.aspx?id=101060
• Exchange 2016 CU16 Language Packs (03/18/2020) – https://www.microsoft.com/en-us/download/details.aspx?id=101061
• Exchange 2016 CU16 Security Update (CVE-2020-16875, KB4577352) – https://www.microsoft.com/en-us/download/details.aspx?id=102014

Exchange 2016 CU15 (12/16/2019):

• Exchange 2016 CU15 (KB4522150) – https://www.microsoft.com/en-us/download/details.aspx?id=100780
• Exchange 2016 CU15 Language Packs (01/07/2020) – https://www.microsoft.com/en-us/download/details.aspx?id=100781

Exchange 2016 CU14:

• Exchange 2016 CU14 (KB4522150) – https://www.microsoft.com/en-us/download/details.aspx?id=100780
• Exchange 2016 CU14 Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=100781

Exchange 2016 CU13:

• Exchange 2016 CU13 (KB44788406) – https://www.microsoft.com/en-us/download/details.aspx?id=58395
• Exchange 2016 CU13 Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=58393

Exchange 2016 CU12:

• Exchange 2016 CU12 (KB4471392) – https://www.microsoft.com/en-us/download/details.aspx?id=57827
• Exchange 2016 CU12 Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=57825

Exchange 2016 CU11:

• Exchange 2016 CU11 (KB4134118) – https://www.microsoft.com/en-us/download/details.aspx?id=57388
• Exchange 2016 CU11 UM Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=57383

Exchange 2016 CU10 and earlier are no longer available from the Microsoft site…

Exchange Server 2013:

Security Update for Exchange 2013 CU23 (KB4536988) – 02/11/2020

• Description of the security update for Microsoft Exchange Server 2013: February 11, 2020 – https://support.microsoft.com/en-us/help/4536988/description-of-the-security-update-for-microsoft-exchange-server-2013

Exchange 2013 CU23 (06/18/2019):

• Cumulative Update 23 for Exchange Server 2013 (KB4489622) – https://www.microsoft.com/en-us/download/details.aspx?id=58392
• Exchange Server 2013 CU23 UM Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=58392

Exchange 2013 CU22:

• Cumulative Update 22 for Exchange Server 2013 (KB4345836) – https://www.microsoft.com/en-us/download/details.aspx?id=57826
• Exchange Server 2013 CU22 UM Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=57828

Exchange 2013 CU21:

• Exchange 2013 CU21 – https://www.microsoft.com/en-us/download/details.aspx?id=57069
• Exchange 2013 CU21 UM Language Packs – https://www.microsoft.com/download/details.aspx?id=57066

Please be advised that Exchange 2013 CU21 is the last planned Cumulative Update for Exchange 2013. Exchange 2013 entered extended support on April 10th, 2018. Security updates for Exchange 2013 will be released when needed. To receive these security updates, customers are advised to install Exchange 2013 CU21. For more information check the Exchange team blog:
https://blogs.technet.microsoft.com/exchange/2018/04/10/exchange-server-2013-enters-extended-support-lifecycle-phase/

Update. When additional important security fixes are released, Microsoft will release additional Cumulative Updates for Exchange 2013. So, despite end of support of Exchange 2013 you can see newer CU’s become available.

Exchange 2013 CU20:

• Exchange 2013 CU20 – https://www.microsoft.com/en-us/download/details.aspx?id=56717
• Exchange 2013 CU20 UM Language Packs – https://www.microsoft.com/en-us/download/details.aspx?id=56716

Exchange 2013 CU19 and earlier are no longer available from the Microsoft site…

Exchange 2013 SP3 Update Rollups:

• Exchange Server 2010 Service Pack 3 Update Rollup 29 (KB4509410) –https://www.microsoft.com/en-us/download/details.aspx?id=58476
• Exchange Server 2010 Service Pack 3 Update Rollup 28 (KB4503028) –https://www.microsoft.com/en-us/download/details.aspx?id=58354
• Exchange Server 2010 Service Pack 3 Update Rollup 27 (KB4491413) –https://www.microsoft.com/en-us/download/details.aspx?id=58196
• Exchange Server 2010 Service Pack 3 Update Rollup 26 (KB4487052) –https://www.microsoft.com/en-us/download/details.aspx?id=57824
• Exchange Server 2010 Service Pack 3 Update Rollup 25 (KB4468742) –https://www.microsoft.com/en-us/download/details.aspx?id=57759
• Exchange Server 2010 Service Pack 3 Update Rollup 24 (KB4458321) –https://www.microsoft.com/en-us/download/details.aspx?id=57306
• Exchange Server 2010 Service Pack 3 Update Rollup 23 (KB4340733) –https://www.microsoft.com/en-us/download/details.aspx?id=57219
• Exchange Server 2010 Service Pack 3 Update Rollup 22 (KB4295699) – https://www.microsoft.com/en-us/download/details.aspx?id=57065
• Update Rollup 21 For Exchange 2010 SP3 (KB4091243) –
  https://www.microsoft.com/en-us/download/details.aspx?id=56899
• Update Rollup 20 For Exchange 2010 SP3 (KB4073537) – https://www.microsoft.com/en-us/download/details.aspx?id=56659
• Update Rollup 19 For Exchange 2010 SP3 (KB4035162) – https://www.microsoft.com/en-us/download/details.aspx?id=56361
• Update Rollup 18 For Exchange 2010 SP3 (KB4018588) – https://www.microsoft.com/en-us/download/details.aspx?id=55591
• Update Rollup 17 For Exchange 2010 SP3 (KB4011326) – https://www.microsoft.com/en-us/download/details.aspx?id=54934
• Update Rollup 16 For Exchange 2010 SP3 (KB3184730) – https://www.microsoft.com/en-us/download/details.aspx?id=54453
• Update Rollup 15 For Exchange 2010 SP3 (KB3184728) – https://www.microsoft.com/en-us/download/details.aspx?id=53678

Office Web Apps / Office Online Server

Office Web Apps server and Office Online Server are no longer available for public download. They are available from the Microsoft Volume Licensing Service Center (VLSC) under Volume Licensing agreements. If you have a valid license and should be able to use Office Online Server under your license agreement, please contact Microsoft support.

Exchange blogposts and articles:

• Publishing Exchange Server 2013 using TMG – http://blogs.technet.com/b/exchange/archive/2012/11/21/publishing-exchange-server-2013-using-tmg.aspx
• Exchange 2013 Offline Help (.chm) file – http://www.microsoft.com/en-us/download/details.aspx?id=35395
• Exchange 2013 Deployment Assistant – http://technet.microsoft.com/en-US/exdeploy2013/
• Exchange 2013 101 Code Samples – http://code.msdn.microsoft.com/office/Exchange-2013-101-Code-3c38582c
• Exchange 2013 Architecture Poster – http://www.microsoft.com/en-us/download/details.aspx?id=39102
• Exchange 2013 Server Role Requirements Calculator – http://blogs.technet.com/b/exchange/archive/2013/05/14/released-exchange-2013-server-role-requirements-calculator.aspx
• Sizing Exchange 2013 Deployments – http://blogs.technet.com/b/exchange/archive/2013/05/06/ask-the-perf-guy-sizing-exchange-2013-deployments.aspx
• Microsoft Exchange Server Jetstress 2013 Tool – http://www.microsoft.com/en-us/download/details.aspx?id=36849

Last update: September 11, 2018