While sending an email through the Outlook desktop app, if you see an error message saying Microsoft Outlook cannot sign or encrypt this message because there are no ...

Microsoft has confirmed a known issue that prevents recipients from opening encrypted emails in classic Outlook.

Microsoft is looking into a newly identified issue in classic Outlook that prevents users from opening certain encrypted ...

The problem happens for users who encrypt the email using the settings under the email File dialog (File > Encrypt), ...

If you send sensitive information through email, you risk someone intercepting and reading your messages. However, you can ensure that only you and the intended recipient can view the contents of your ...

You may see this error because the Microsoft 365 encryption service cannot verify your identity or check if you have permission to view the message. This is not ...