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Bspies1's avatar
Bspies1
Copper Contributor
Feb 12, 2025
Solved

EDR Exclusions - file extensions with square brackets

Background: We applied for, and received the ability to access EDR Exclusions for our tenant due to some performance problems we were seeing. I think this might still be an early preview feature but ...
microsoft defender for endpoint
  • micheleariis's avatar
    micheleariis
    Feb 25, 2025

    Bspies1Unfortunately, there isn’t currently a direct way to add file extensions containing square brackets [] in Defender EDR Exclusions, and it looks like a product limitation or bug in the portal.

    The most reliable workaround is to do a path or process exclusion rather than an extension-only exclusion. If that’s not workable, you should open a Microsoft Support case or use the Microsoft 365 Defender “Send feedback” or “Help + support” channels to request that they fix the validation rules to allow bracketed extensions.

     

micheleariis's avatar
micheleariis
MCT
Feb 25, 2025

Bspies1Unfortunately, there isn’t currently a direct way to add file extensions containing square brackets [] in Defender EDR Exclusions, and it looks like a product limitation or bug in the portal.

The most reliable workaround is to do a path or process exclusion rather than an extension-only exclusion. If that’s not workable, you should open a Microsoft Support case or use the Microsoft 365 Defender “Send feedback” or “Help + support” channels to request that they fix the validation rules to allow bracketed extensions.

 

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