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Devices that run the versions of Azure Stack HCI listed below will no longer receive monthly security and quality updates. These updates contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends that you update to the latest version of Azure Stack HCI. 

Azure Stack HCI versions that have reached end of service:

  • Azure Stack HCI, version 21H2 

  • Azure Stack HCI, version  20H2

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