Microsoft blocks Outlook from sending two file types

Summarised from 2 outlets · Updated 7 Oct, 17:37 · Archive

Microsoft has prevented Outlook from sending .msix and .msixbundle files over security concerns.

Microsoft has extended its security restrictions in Outlook by blocking the sending of .msix and .msixbundle files. These file types, commonly used for application packaging, are now prevented from being transmitted through the email client unless an administrator specifically whitelists them.

The move follows Microsoft's broader efforts to restrict potentially risky file types in Outlook. Users who need to send these files can request that their system administrator allow them on a case-by-case basis.

How it is being reported

• Microsoft blocks Outlook from sending two more file types over security concernsSay goodbye to .msix and .msixbundle files in your email (unless your admin whitelists them).TechRadar · 7 Oct, 17:20
• Microsoft extends the Outlook naughty step with two more file typesYou didn't really want to be sending around .msix and .msixbundle files, did you?The Register · 6 Oct, 16:06

In this story: Microsoft · Outlook

This summary was written by AI from the headlines and standfirsts above, and states as fact only what at least two outlets report. How we use AI · Report a problem