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  1. Set up Outlook to use S/MIME encryption - Microsoft Support

    Set up Outlook to use S/MIME encryption Applies To Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the …

  2. Device Encryption in Windows - Microsoft Support

    Learn about BitLocker Device Encryption in Windows and how to enable it.

  3. Learn about securing and protecting email messages in Outlook

    Learn how to use encryption and other security settings to protect messages sent from Outlook.

  4. Send S/MIME or Microsoft Purview encrypted emails in Outlook

    In an email message, select Options > Encrypt. Choose the encryption option that has the restrictions you'd like to enforce, such as Do Not Forward. Finish composing your email and then select Send. In …

  5. Send encrypted messages with a Microsoft 365 personal or family ...

    To send a message with encryption, compose a new message, select the Options ribbon, and then select Encrypt. You can choose Encrypt or Do Not Forward. To remove encryption, select No …

  6. BitLocker Drive Encryption - Microsoft Support

    BitLocker Drive Encryption allows you to manually encrypt a specific drive or drives on a device running Windows Pro, Enterprise, or Education edition. For devices managed by an organization, BitLocker …

  7. Secure messages with a digital ID in Outlook - Microsoft Support

    You might choose to have more than one digital ID—one for your digital signature, which in many areas can have legal significance, and another for encryption.

  8. Open encrypted and protected messages - Microsoft Support

    Learn how to open encrypted emails. Outlook protected messages have a banner at the top of the message that informs you of restrictions. Outlook should open the message like normal. Otherwise, …

  9. Send a digitally signed or encrypted message for Mac

    Learn how to use digital signatures and encryption in Outlook for Mac. Both the sender and recipient must have a mail application that supports the S/MIME standard.

  10. View certificates - Microsoft Support

    The email encryption certificate details for the messages that you send or receive can be reviewed.

  11. Introduction to IRM for email messages - Microsoft Support

    Open the encrypted message from your Sent Items folder by double-clicking it. Select File > Encrypt > Unrestricted Access. Select Save. When the following file types are attached to a rights-managed …