Download domains not working after installing the March 2024 SU.If something does not work properly after updates, see Repair failed installations of Exchange Cumulative and Security updates. If you encounter errors during or after installation of Exchange Server, run the SetupAssist script.Re-run the Health Checker after you install an SU to see if any further actions are needed.Running this script will tell you if any of your Exchange Servers are behind on updates (CUs, SUs, or manual actions). Inventory your Exchange Servers to determine which updates are needed using the Exchange Server Health Checker script.Use the Exchange Update Wizard to choose your current CU and your target CU to get directions. The following update paths are available: OIT performs text extraction operations when processing email messages that have attachments in Exchange Transport Rule (ETR) and Data Loss Prevention (DLP) scenarios.įor more information, see The OutsideInModule module is disabled after installing the March 2024 SU. Security Advisory ADV24199947 informationĪfter you install this security update, Exchange Server no longer uses Oracle Outside In Technology (also known as OutsideInModule or OIT). More details about specific CVEs can be found in the Security Update Guide (filter on Exchange Server under Product Family). Exchange Online customers are already protected from the vulnerabilities addressed by these SUs and do not need to take any action other than updating any Exchange servers or Exchange Management tools workstations in their environment. These vulnerabilities affect Exchange Server. Although we are not aware of any active exploits in the wild, our recommendation is to immediately install these updates to protect your environment. The March 2024 SUs address vulnerabilities responsibly reported to Microsoft by security partners and found through Microsoft’s internal processes. SUs are available for the following specific versions of Exchange Server:

Microsoft has released Security Updates (SUs) for vulnerabilities found in:

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