Encryption is the process of converting data into a code to prevent unauthorized access. In Windows, this can be achieved using built-in tools that allow you to encrypt files and folders, ensuring that only …

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

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 …

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

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 web for work or school accounts to increase the …

Send S/MIME or Microsoft Purview encrypted emails in Outlook using a work or school account with a qualified Microsoft 365 subscription.

BitLocker is a Windows security feature that protects your data by encrypting your drives. This encryption ensures that if someone tries to access a disk offline, they won’t be able to read any of its …

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.

Here's what you need to know about encrypted messages using your Microsoft 365 personal or family subscription. Discover how to encrypt an email in Outlook, send an encrypted email, and read an …

Learn how to identify and open encrypted and protected emails no matter what email client you're using.