March security updates

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Show only Search instead for. Did you mean:. Sign In. The Exchange Team. With these new updates, you will have a new path you can take: What are these updates? Installing these updates does not mean an unsupported CU is now supported. We are producing updates only for some older CUs for Exchange , and If you are running a version of Exchange not covered by these updates, consider either rolling forward to a CU package that has an applicable SU, or rolling forward to a supported CU preferred option.

In case you need to go forward with CUs, please see: best practices for installation of Exchange updates applies to all versions of Exchange. About installation of these updates These updates must be installed from an elevated command prompt: Download the update but do not run it immediately.

In the results, right-click Command Prompt , and then select Run as administrator. Type the full path of the. After the installation is finished, re-enable the antivirus software, and then restart the computer.

For a list of the files that are provided in this update, download the file information for cumulative update Table of contents. Release Date:. Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Microsoft Defender Security Research Team has published a related blog post called Defending Exchange servers under attack which can help you understand some general practices around detection of malicious activity on your Exchange servers and help improve your security posture.

You do not need to re-run HCW if you are using it. Machines with Management Tools only are not impacted there are no Exchange services installed and do not require installation of March SUs. Please note that a 'management server' which many of our Hybrid customers have which is an Exchange server kept on premises to be able to run Exchange management tasks is different. For Hybrid, please see the Hybrid question above. After performing code reviews, we can state that the code involved in the attack chain to begin CVE was not in the product before Exchange Server Exchange does not include the UM service.

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