Microsoft Adds 38 Further File Extensions to Blocked List on Outlook

[engine]

Microsoft has already blocked many files extensions from being sent and received via Outlook, and these include obvious file extensions, such as .bat, .cmd, .exe, which could easily deliver an undesirable payload.

However, a number of new file extensions are now added, and these include, .jar, py, ps1, ms, and more.

The full list of blocked extensions is here. [support.office.com...]

[bill]

E-mail isn't a great way to send files, and it's a huge security concern. Their advice to put files on SharePoint or OneDrive and then link or point to them is not bad advice. The FTP protocol was made for a reason...

[engine]

Oh, I agree, it's not a good way to send files.
The problem lies with the bad actors sending nasty payloads.

[bill]

Nearly impossible to train people not to send files via e-mail though.. so this isn't a bad move. I'll bet this was a hard one for MS internally as it likely impacts a small vocal minority of users who for some reason need to send Windows Vista .gadget files ;)

[tangor]

If one really needs to send, put it in a container (zip, etc) and do it that way. That said, the vast majority of button pushers out there have no clue and probably never send these kind of files ... and those that do probably SHOULD be blocked!