Updates for Exchange Server

Exchange follows a quarterly delivery model to release Cumulative Updates (CUs) that address issues reported by customers. CUs sometimes also add new features and functionality.

Critical product updates are packages that address a Microsoft-released security bulletin or that contain a change in time zone definitions. When in Mainstream Support, critical product updates are released as needed on a monthly basis for the most recently released CU and for the immediately previous CU. When in Extended Support, critical product updates are released as needed on a monthly basis for only the most recently released CU.

To get the latest version of Exchange 2019, download and install Cumulative Update 14 for Exchange Server 2019. Each CU is a full installation of Exchange that includes all updates and changes from previous CUs. When installing a new Exchange server using the latest released CU, you don't need to install Exchange RTM or any previously released CU.

The following table contains links to Exchange Team blog posts ("What's New" information) for this and other Exchange 2019 CUs.

Version	Blog post
Exchange 2019 CU14	Released: 2024 H1 Cumulative Updates for Exchange Server
Exchange 2019 CU13	Released: 2023 H1 Cumulative Updates for Exchange Server
Exchange 2019 CU12	Released: 2022 H1 Cumulative Updates for Exchange Server
Exchange 2019 CU11	Released: September 2021 Quarterly Exchange Updates
Exchange 2019 CU10	Released: June 2021 Quarterly Exchange Updates
Exchange 2019 CU9	Released: March 2021 Quarterly Exchange Updates
Exchange 2019 CU8	Released: December 2020 Quarterly Exchange Updates
Exchange 2019 CU7	Released: September 2020 Quarterly Exchange Updates
Exchange 2019 CU6	Released: June 2020 Quarterly Exchange Updates
Exchange 2019 CU5	Released: March 2020 Quarterly Exchange Updates
Exchange 2019 CU4	Released: December 2019 Quarterly Exchange Updates
Exchange 2019 CU3	Released: September 2019 Quarterly Exchange Updates
Exchange 2019 CU2	Released: June 2019 Quarterly Exchange Updates
Exchange 2019 CU1	Released: February 2019 Quarterly Exchange Updates
Exchange 2019 RTM	Exchange Server 2019 Now Available

For information about the new features you'll get when you upgrade to Exchange 2019 from previous versions of Exchange, see What's new in Exchange Server.

• To upgrade to the latest CU after you've downloaded it, see Upgrade Exchange to the latest Cumulative Update.
• For downloads and updates for other versions of Exchange, see Exchange Server build numbers and release dates.