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If you cannot open an encrypted email using the desktop version of Outlook (2016/2019/365) or Outlook on the web, make sure you are connected to the Internet. Microsoft Information Protection allows you to ensure your emails can’t be copied or forwarded without your permissions. You can open it using Microsoft Outlook, which is available for iOS, Android, Windows, and Mac OS. This message is protected with Microsoft Information Protection. When you receive an encrypted message in alternative application, you will see the following text (and the encrypted message file with the *.rpmsg extension - Rights-Managed Email Message will be attached to the email). The native iOS email app doesn’t support encrypted emails from Office 365. If you want to use an iOS/Android mobile device to read emails, be sure to install and use Outlook for Mobile. View Encrypted 365 Email on iOS and Android Wait about 1 hour for the changes to take effect. Reset text/html MIME types to default: Set-OwaMailboxPolicy -AllowedMimeTypes = "text/html"} -BlockedMimeTypes = "text/html"} -ForceSaveMimeTypes = "text/html"} -Identity $owapolicy.Identity

List the current associations for MIME file types: Check if the MIME types associated with the default Outlook Web App policy changed and if the text/html MIME type was removed.Ĭonnect to your Exchange Online tenant using the Exchange Online PowerShell (EXOv2) module: Connect-ExchangeOnline -UserPrincipalName the current OWA policy settings: $owapolicy = Get-OwaMailboxPolicy

Microsoft 365 compliance), Outlook will automatically decrypt the email, only if the content type matches the configured Outlook Web App policy. When an Exchange Online user tries to read a message encrypted with Microsoft Purview Message Encryption (ex. If the user’s mailbox is hosted in an Exchange Online tenant and they can’t view the encrypted message in Outlook Web App, check the default Outlook Web App policy in Microsoft 365.

In this case, try to sign out of all Microsoft Office programs on your device, sign out your Microsoft account in your browser, restart your computer, and try to authenticate again. Please try again by following the instructions in the original email message in 5 minutes. Something went wrong and your encrypted message couldn’t be opened. Sorry, we can’t display your message right now.