Sometimes we tend to protect privacy by using some file encryption tools, such as EFS (Encrypting File System), which provides the core file encryption technology used to store encrypted files on NTFS file system volumes. Encryption comes basically in two flavours: Symmetric or secret key encryption: in this situation the sender and the receiver share the same secret key that is used to both encrypt and decrypt messages. In the first step, create a new folder and store your encrypted MS excel file in that folder.The second column also demonstrated how to use XSS4J for XML encryption.
How to open encrypted xml file To resolve this issue, apply the following update: