Microsoft Delays Release of Exchange Server SE Cumulative Update 1 to Late 2026
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- ITmedia.co.jp
Microsoft has announced a delay in the release of the Cumulative Update 1 (CU1) for Exchange Server Subscription Edition (SE), now scheduled for the second half of 2026. This postponement, initially set for the first half of 2026, is attributed to the company's focus on security issues and vulnerability detection using AI.
The delay is significant as it reflects Microsoft's commitment to prioritizing security over release timelines. The Exchange Server team has been actively addressing reported security vulnerabilities, delivering monthly security updates from May to August 2026. This approach aims to ensure that the CU1 update is stable and does not require immediate subsequent patches, which could complicate IT management.
Looking ahead, Microsoft plans to continue developing CU1 while maintaining a steady pace of security updates. IT administrators are encouraged to transition to Exchange Server SE and keep their systems updated with the latest security measures until the CU1 release. No further timeline was disclosed at the time of publication.
Original report
[ITmedia エンタープライズ] 「Exchange Server SE」の大型アップデートに遅れ Microsoftが明かした、リリース延期の背景
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