How to unblock a specific file extension - exchange online

Aran Billen 761 Reputation points

Hi all,

How do I allow a specific file type which is being blocked by exchange online:

Screenshot 2024-06-27 at 10.48.30

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Accepted answer
  1. Vasil Michev 99,941 Reputation points MVP

    You will have to modify the Anti-malware policy to allow the file type, as detailed here:

    In addition, you have to unblock the filetype in the OWA Mailbox policy assigned to the user(s) in question. You can only do this via PowerShell and the Set-OWAMailboxPolicy cmdlet:

    2 people found this answer helpful.

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