Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.445.476.0) - Current Channel (Broad

Question

Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.445.476.0) - Current Channel (Broad

Answer 1

Security Intelligence Update for Microsoft Defender Antivirus – KB2267602 (Version 1.445.476.0) – Current Channel (Broad) is one of the regular Microsoft Defender Antivirus security intelligence (definition) updates.

Key points based on the provided context:

• KB2267602 is the standard KB number used for Microsoft Defender Antivirus security intelligence updates.
• “Security intelligence” is what was previously called “definitions” in Microsoft Defender; it contains the latest malware signatures and related detection logic.
• “Current Channel (Broad)” is the recommended channel for production devices. Devices in this channel receive security intelligence updates only after the gradual rollout completes, which is suitable for most home and production systems.
• Keeping this update installed and current is important to ensure protection against new malware and attack techniques.

If the update is being offered or has installed, it is a normal, expected Defender Antivirus definition update and should be allowed/kept.

To check or manually trigger this update on Windows 11:

1. Open Windows Security from Start.
2. Select Virus & threat protection.
3. Select Virus & threat protection updates.
4. Review the Security intelligence version and select Check for updates to download the latest definitions if available.

If security intelligence is not updating correctly, the context also notes that updates can be installed via Windows Update, WSUS/SUP, a file server, the Windows Security app, or command line using MpCmdRun.exe -SignatureUpdate.

---

References:

• Microsoft Defender Antivirus security intelligence and product updates and support
• Microsoft Defender Antivirus in the Windows Security app
• Troubleshoot Microsoft Defender Antivirus Security intelligence not getting updated
• Microsoft Defender Antivirus production ring deployment using Group Policy and Microsoft Updates
• Microsoft Defender Antivirus production ring deployment using Group Policy and network share
• Microsoft Defender Antivirus ring deployment using Intune and direct internet access for Microsoft Update
• Use Microsoft Intune to configure and manage Microsoft Defender Antivirus

Answer 2

Hi. I'm David, and I'm happy to help you.

---

Please clarify the following:

Are you trying to install this update and encountered an error during the process, or would you simply like to better understand what it means and how to verify if it was successfully applied?

If there is an error, can you tell me what message appears on the screen?

If you prefer, share a screenshot. Use the shortcut "Windows + Shift + S" to use the screenshot tool.

---

Also. What is the version and "OS Build" of your Windows 11?

• Press "Windows + R", type winver, and click OK.

If you prefer, share a screenshot.

Be sure to censor your email address if it appears. The Microsoft Q&A is public.

---

I await your reply.