If you do have a subscription, you can add as many files as you want (up to your storage limit). Note: If you don't have an Microsoft 365 Family or Personal subscription, you can only add up to three files in your Personal Vault. In the Verify your identity dialog box, verify your account info and make note of your email address in case you want it for the next step. Read about Personal Vault and select Next or Continue (It varies depending on your device). If you don't see the message or you dismissed it, browse to your OneDrive and select the Personal Vault folder. The first time you see Personal Vault in your OneDrive, you'll see a message where you can select Get started. You’ll need to set it up separately on each device where you want to use it. Personal Vault is a special folder in your OneDrive that’s protected by an extra layer of security. All your documents, photos, and videos in Personal Vault are easy to access from, your PC, or other capable devices.

Personal Vault automatically locks after a period of inactivity and then you need to unlock it to get at your files again. Personal Vault is available from OneDrive on the web, the mobile app, and from your Windows 10 PC.

Personal Vault is available for OneDrive home and personal plans, not available in OneDrive for business, or work and school accounts.

Create password protected folder