How to encrypt a file

File encryption helps protect your data by encrypting it. Only someone with the right encryption key (such as a password) can decrypt it. File encryption is not available in Windows 10/11.

• 1. Right-click (or press and hold) a file or folder and select Properties.

• 2. Select the Advanced button and select the Encrypt contents to secure data check box.

• 3. Select OK to close the Advanced Attributes window, select Apply, and then select OK.

Credit: https://support.microsoft.com/en-us/windows/how-to-encrypt-a-file-1131805c-47b8-2e3e-a705-807e13c10da7