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Microsoft offers vintage Exchange and Skype server users six more months of security updates

ID: 224b7f70-7d83-5e49-b1fd-6a7270eeaf11

STIX ID: report--224b7f70-7d83-5e49-b1fd-6a7270eeaf11

Feed Name: The Register (Security)

Date Published: 2025-07-17

Date Updated: 2026-04-26

Author: Simon Sharwood

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Microsoft announced a one-time, six-month Extended Security Update program for Exchange Server 2016/2019 and Skype for Business 2015/2019, extending potential Critical/Important security updates from October 14, 2025 to April 14, 2026. These updates are not guaranteed, will only be disclosed to enrolled customers, won’t appear in standard update channels, require paid participation via Microsoft account teams, and will not be extended beyond April 2026.

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