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  1. How To Encrypt a File or Folder - Microsoft Support

    Learn how to encrypt a file or folder in Windows.

  2. Learn about securing and protecting email messages in Outlook

    Encrypting an email message means it's converted from readable plain text into scrambled cipher text. Only the intended recipient can decipher the message for reading. Any recipient without …

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

    When you need to protect the privacy of an email message, encrypt it. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text.

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

    Before you start this procedure and encrypt emails, you must first get a digital ID, otherwise known as a digital certificate, and add it to the keychain on your computer.

  5. Device Encryption in Windows - Microsoft Support

    Device Encryption is a Windows feature that enables BitLocker encryption automatically for the Operating System drive and fixed drives. It’s particularly beneficial for everyday users who …

  6. BitLocker Drive Encryption - Microsoft Support

    To enable encryption, select the option Turn on BitLocker . The drive will begin the encryption process. This can take some time to complete, but you can continue to use your device while it …

  7. Protect a Word document with a password - Microsoft Support

    Go to File > Info > Protect Document > Encrypt with Password. Type a password, press OK, type it again and press OK to confirm it. Save the file to make sure the password takes effect.

  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. …

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

    In the message, on the Options tab, in the Encrypt group, select Sign. If you don't see the Sign Message button, you might not have a digital ID configured to digitally sign messages, and you …

  10. Send encrypted messages with a Microsoft 365 personal or …

    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 …

  11. Protect an Excel file - Microsoft Support

    Select the Protect Workbook box and choose Encrypt with Password. Enter a password in the Password box, and then select OK . Confirm the password in the Reenter Password box, and …