Microsoft has created a new OneDrive feature called ‘Personal Vault’ that will allow you encrypt and store your files in a secured container. Personal Vault is a separate storage space in OneDrive that will automatically encrypt stored files and can only be accessed through an authentication method such as 2FA, fingerprint, face, PIN, or codes via email and SMS. Microsoft also announced the ability to get additional storage for your OneDrive account in the coming months. Microsoft is increasing the free storage from 50GB to 100GB for standalone users.
Source: https://www.bleepingcomputer.com/news/security/microsoft-onedrive-gets-a-new-encrypted-personal-vault/