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MC1392568 Plan for changeMajor changeUpdated messageUser impactAdmin impactRetirement

Microsoft Defender for Endpoint: Support for Amazon Linux 2 (ARM64) retiring October 31, 2026

Microsoft Defender XDRMicrosoft 365 admin center

Versions captured by this deployment. Earlier versions and notices may be missing; first observed is not first published.

Action date

in 12 days Act by , as Microsoft's metadata states
Microsoft's start date
15 Jun 2026
Last changed by Microsoft
23 Sep 2026
First seen here
19 Oct 2026
Versions seen
1

What the notice says

Microsoft's text, with its sections, lists and tables; source markup removed

Updated September 23, 2026: We have updated this post as a reminder. Thank you for your patience.

What and Why

We are retiring support for Microsoft Defender for Endpoint (MDE) on Amazon Linux 2 (AL2) running on ARM64 architecture, effective October 31, 2026.

Schedule

  • Retirement effective: October 31, 2026
  • After this date, support and updates will no longer be available.

Impact on Your Organization

Who is affected

  • Organizations using Microsoft Defender for Endpoint on Amazon Linux 2 (ARM64)
  • Organizations using AL2 on AMD64/x86_64 are not affected

Platforms/Services

  • Microsoft Defender for Endpoint
  • Amazon Linux 2 (ARM64)

What will happen

  • Defender versions released after this build will not install on AL2 (ARM64) due to platform incompatibility.
  • Version 101.25122.0004 is the last supported version for this platform.
  • After October 31, 2026:
  • Devices remaining on this platform may:
  • No security updates
  • No bug fixes
  • No technical support
  • Miss new features, detection improvements, and protection enhancements
  • Be exposed to increased security and stability risks over time

Action Required / Recommendations

Action required by October 31, 2026.

Admins should:

  • Identify devices running Amazon Linux 2 (ARM64) with Defender for Endpoint.
  • Prevent upgrades beyond version 101.25122.0004 on those devices.
  • Plan migration to a supported Linux distribution for MDE.
  • Complete migration before October 31, 2026.

No action is required for devices running Amazon Linux 2 on AMD64/x86_64 architectures.

Learn more: Prerequisites for Microsoft Defender for Endpoint on Linux | Microsoft Defender for Endpoint | Microsoft Defender | Microsoft Learn

Compliance Considerations

No compliance considerations identified. Review as appropriate for your organization.

What changed

Between the versions this installation saw, newest first

This installation has seen one version of this notice, first on 19 Oct 2026. Later changes will show here.

Linked documentation

Microsoft pages the notice links to

The notice links to no Microsoft Learn or Support page that this installation reads.

Not confirmed here

What this page cannot tell you
  • Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.
  • Versions before 19 Oct 2026: this installation first saw the notice after Microsoft posted it.
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 19 Oct 14:26 UTC · 253 of 255 readable · 252 fully read · documentation 417/444 current

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