OneNote: Password Protect Sections

Have some super secret stuff kept in a OneNote notebook? Me too. It would be really unfortunate if someone stumbled across all of my plans to take over the world and I'd forgotten to do something as simple as password protect it.

Right-click on any of the section tabs in your notebook, and then click on 'Password Protect This Section...'. A pane will appear on the right-hand side of your screen. Click on the 'Set Password...' button and then enter your password. Be careful when you are setting this - you won't be able to get back in if you've forgotten the password.


  1. Thanks for the simple easy instruction. I tried Microsoft's help but I would have to pass the bar exam to get to one simple answer.

  2. It's too bad that you cannot password protect an entire notebook. Often times people have large notebooks with many sections that need to be encrypted and it's not really practical to lock every single section. It would be so much easier to be able to lock the whole notebook.

  3. Agreed! Definitely something I'd change about OneNote if I had the power to do so.

  4. Yes, once you password protect the file, someone else can't see it. But what keeps them from just DELETING it? I created a password protected section for test, wrote a small note, protected it, locked it, closed notebook. Opened up notebook and simply deleted the section.
    How do you keep sections from being deleted?

    1. That would be a useful feature, for sure. As far as I know, there is no built-in feature to prevent a section from being deleted. I can only recommend that you back everything up on a regular basis to a protected location if that's something that you are concerned about.