Windows 10

1. Right-click the folder that you want to encrypt and click Properties.  In the Properties dialog box, click Advanced.

2. From Advance Attributes box, Tick the “Encrypt contents to secure data” check box and click OK.

3. From Confirm Attribute Changes box, select Apply changes to the folder, subfolders and files, click Ok.

4. The folder had been encrypted. The folder becomes marked with yellow lock which denotes that it is encrypted.