Windows Server 2012 R2 End Of Life: What Is “Extended Support”
https://www.technewstoday.com/windows-server-2012-r2-end-of-life/
May 05, 2022 · Windows Server 2012 and 2012 R2 follow the Fixed Lifecycle Policy, as per which Microsoft provides 5 years of Mainstream Support and 5 years of Extended Support. A product receives all types of updates and support during the Mainstream support period, whereas during the Extended Support period, it stops receiving non-security updates.
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