Although Skype for Business 2015 and 2019 are now out of support , some customers have purchased the Skype for Business 2015 and 2019 Extended Security Update (ESU) . We have therefore decided that until the end of this Skype for Business 2015 and 2019 ESU period (April 2026) we will make an explicit update related announcement even if we DO NOT release anything for that particular month. There are no security releases for any version of Skype for Business Server in March 2026, for customers…
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