Security Policy Errors

How to Audit Microsoft Defender File and Folder Exclusion Changes

Huma Ashraf Ch Sep 25, 2026 869 views

Question details

Organizations need to identify which administrators have added or modified file and folder exclusions within Microsoft Defender.

How to Audit Microsoft Defender File and Folder Exclusion Changes

Product: Microsoft Defender
Device & OS: not provided
Scenario: Administrators are trying to track changes to enterprise security policies, specifically looking for the correct audit source to monitor Defender exclusion modifications.
Observed behavior: The correct audit logs and event IDs cannot be universally identified because they depend heavily on the specific Defender product and tenant configuration being used.

Before you start

Before querying the audit logs, gather your exact Defender product version, tenant type, and the approximate timeframe when the exclusion changes were made.

Solution 1Recommended

Consult Microsoft Learn Q&A for Specific Audit Logs

Because audit sources vary by Defender product and configuration, posting in the appropriate Microsoft enterprise forum is the best way to identify the exact event IDs.

Microsoft Defender encompasses various products (like Defender for Cloud, Defender for Endpoint). The audit logs that record file and folder exclusion changes differ based on which specific service your enterprise is utilizing.

Navigate to Microsoft Learn Q&A

Open your web browser and go to the official Microsoft Learn Q&A portal.

Select the relevant Defender section

Choose the specific forum that matches your product, such as 'Microsoft Defender for Cloud' or 'Microsoft Defender for Endpoint'.

Post your detailed query

Submit a question detailing your Defender product, tenant type, and the approximate time of the exclusion changes so specialists can provide the exact audit log sources.

Consult Microsoft Learn Q&A for Specific Audit Logs

Information: Having your tenant details ready will significantly speed up the response time from Microsoft enterprise specialists.

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Frequently Asked Questions

Why is it important to audit Defender file and folder exclusions?

Auditing these changes helps security teams detect if unauthorized administrators are bypassing security protocols, which could leave the network vulnerable to malicious files.

Where can I typically find Microsoft 365 Defender audit logs?

Audit logs are usually accessible through the Microsoft 365 compliance center or the unified Defender portal under the Audit search section, provided auditing is enabled for your tenant.

Are the event IDs for exclusion changes the same across all Defender products?

No. The event IDs and exact log locations vary depending on whether you are using Defender for Endpoint, Defender for Cloud, or standard Windows Security.

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