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October 10, 2025

Microsoft Defender for Endpoint Misidentifies SQL Server 2017 & 2019 as End-of-Life: A Bug Report

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Microsoft has identified a bug in its Defender for Endpoint software that incorrectly marks SQL Server 2017 and 2019 as end-of-life products. This issue emerged recently, catching IT administrators off guard as they rely on Microsoft Defender XDR for effective threat and vulnerability management.

The false alerts, noted on platforms like Bleeping Computer and within a Microsoft 365 service alert, began appearing on Wednesday. The alert erroneously categorized these SQL Server versions, which are still supported—SQL Server 2019 is valid until January 2030, and SQL Server 2017 until October 2027.

Microsoft has confirmed that this problem results from a coding change affecting the software’s detection of end-of-support statuses. A fix is currently being rolled out to address the mislabeling, and while the issue may impact various systems utilizing these SQL Server versions, Microsoft has categorized the incident as an advisory, suggesting minimal operational consequences.

The company reassured users:

We’re continuing to deploy a fix that’s designed to reverse the offending change that introduced the code issue and will provide a timeline for its completion as one becomes available.

In the meantime, IT administrators can disregard the misleading end-of-life alerts as the fix is distributed globally. Microsoft is anticipated to provide completion updates soon after full remediation is confirmed.

For further details on this topic, refer to microsoft and sql server.


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