Microsoft bans 38 file extensions from Outlook to stop you downloading viruses

Microsoft has banned 38 new file extensions from Outlook online, bringing the total number of forbidden file types to 104.

The company hasn’t said exactly when the change will roll out, but it’s expected to come into force very soon. When it does, you will no longer be able to download files with the blacklisted extensions unless your system admin has made a specific exception.

https://www.techradar.com/news/microsoft-bans-38-file-extensions-from-outlook-to-stop-you-downloading-viruses