How to open an RPMSG file?

[Rob_D]

Does anyone know how I can open a .rpmsg file? I've tried in classic and new outlok and OWA and it doesn't open. If I download it, it doesn't even show Outlook as an option to open the email. I've tried opening it in the Information Protection Viewer and it says that it's not compatibile.

[DavR]

RPMSG files are encrypted message files. Either you should just be able to open them in OWA, or you can't because you're not authorised / the package has expired. 

 

If it's legit, go back to the sender as ask them to give you access, or send again unencrypted.

[Rob_D]

If i try to open it in OWA it just downlaods to my PC again.

The rpmsg is an attachement on a DLP alert email.

[DavR]

Maybe go to the DLP alerts dashboard in the admin console instead? Not sure why they'd be sending you an encrypted message, but I'm not using DLP myself.

 

I'm sure you've checked, but, is it definitely a legit microsoft alert, not some phishing / spam mail?