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You can exclude certain files, folders, processes, and process-opened files from Microsoft Defender Antivirus scans. Such exclusions apply to scheduled scanson-demand scans, and always-on real-time protection and monitoring. Exclusions for process-opened files only apply to real-time protection.

Configure and validate exclusions

To configure and validate exclusions, see the following:

Recommendations for defining exclusions

 Important

Microsoft Defender Antivirus includes many automatic exclusions based on known operating system behaviors and typical management files, such as those used in enterprise management, database management, and other enterprise scenarios and situations.

Defining exclusions lowers the protection offered by Microsoft Defender Antivirus. You should always evaluate the risks that are associated with implementing exclusions, and you should only exclude files that you are confident are not malicious.

Keep the following points in mind when you are defining exclusions:

  • Exclusions are technically a protection gap. Consider all your options when defining exclusions. Other options can be as simple as making sure the excluded location has the appropriate access-control lists (ACLs) or setting policies to audit mode at first.
  • Review the exclusions periodically. Recheck and re-enforce mitigations as part of your review process.
  • Ideally, avoid defining exclusions in an effort to be proactive. For example, don’t exclude something just because you think it might be a problem in the future. Use exclusions only for specific issues, such as those pertaining to performance or application compatibility that exclusions could mitigate.
  • Review and audit changes to your list of exclusions. Your security team should preserve context around why a certain exclusion was added to avoid confusion later on. Your security team should be able to provide specific answers to questions about why exclusions exist.

Source : Official Microsoft Brand
Editor by : BEST Antivirus KBS Team

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