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No end date

Microsoft Defender Antivirus Engine

Updated continuously, with no end date published. The newest release is 1.1.26090.9.

Publisher's record

What to do

The publisher updates Microsoft Defender Antivirus Engine continuously and states no end date. Stay on the newest release, 1.1.26090.9.

1.1.26090.9Newest release · undated

Is your version current?

Compared with the publisher's releases of this line

Releases of Microsoft Defender Antivirus Engine

1 collected, newest first
VersionPublishedWhat the notes say
1.1.26090.9 Not dated—

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.

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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 14 Oct 19:01 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current

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