Account Security Problems

How to Secure OneNote When Others Can Sign In with a Windows PIN

Camila Milosovich Sep 28, 2026 869 views

Question details

The user needs to prevent other individuals from accessing their personal OneNote data on a shared Windows computer where login is authorized via a shared device PIN.

Product: Microsoft OneNote
Device & OS: Windows
Scenario: Using a personal Microsoft account for OneNote on a shared Windows PC where multiple users know the Windows Hello PIN.
Observed behavior: Because Windows retains Office credentials or Windows Hello authentication, another user can open OneNote and access the original user's private notebooks simply by entering the computer's shared PIN.

Before you start

Ensure you have access to a secure, private device, such as your smartphone, so you can safely manage your Microsoft account security settings and approve any two-step verification prompts.

Solution 1Recommended

Remove Stored Credentials from the Shared Computer

Clear your saved Microsoft account details from the local Windows environment to stop OneNote from signing in automatically.

When you log into an Office app on Windows, the system often caches your credentials. Removing these from the local Credential Manager prevents the shared PIN from authenticating your account.

Remove from Windows Accounts

Open Windows 'Settings', navigate to 'Accounts', and select 'Email & accounts' (or 'Access work or school'). Find your Microsoft account in the list, click on it, and select 'Remove'.

Open Credential Manager

Click the Windows Start menu, type 'Credential Manager' into the search bar, and press Enter to open the utility.

Delete Office Credentials

Click on 'Windows Credentials'. Look through the list of Generic Credentials for any entries starting with 'MicrosoftOffice'. Click the drop-down arrow next to each one and select 'Remove'.

Remove Stored Credentials from the Shared Computer

Local Security Increased: Once these credentials are deleted, launching OneNote will require full Microsoft account authentication rather than just the local device PIN.

Solution 2

Force Sign-Out and Update Account Security Remotely

If you no longer have physical access to the shared computer, you can secure your account and sever the connection via the web.

Free Microsoft Office alternative

Try WPS Office for Secure, Local Document Management

If you are concerned about auto-syncing issues and shared device security with Microsoft Office, consider switching to WPS Office. It provides a highly compatible, lightweight alternative that makes it easy to work on files locally, keeping your documents secure without forcing complex cloud integrations.

1. Open Your File in WPS Office: Launch WPS Writer, Spreadsheets, or Presentation, and open the document you want to secure.
2. Access Encryption Settings: Navigate to the 'Menu' button at the top-left, click on 'Document Encryption', and then select 'Encryption'.
3. Set a Secure Password: Enter a unique document password that is different from the shared computer's PIN to lock the file securely.

Seamless compatibility with Microsoft Office formats (DOCX, XLSX, PPTX)Save and manage files locally to avoid unintended cloud syncing on shared computersBuilt-in document encryption lets you set standalone passwords for sensitive filesFamiliar, tabbed interface that makes document creation straightforward

microsoft office alternative - wps office

Frequently Asked Questions

Why can someone access my OneNote with just the computer PIN?

When you log into Office applications like OneNote on a Windows PC, the operating system can link your Microsoft account credentials to the device's Windows Hello PIN. If another user knows this shared PIN, Windows authenticates them as authorized to view your cached Office data.

Does signing out of OneNote delete my notebooks?

No. Signing out of OneNote only removes local access to the notebooks on that specific device. Your notebooks remain safely backed up and stored in your Microsoft OneDrive.

How can I safely use web versions of Office on a shared computer?

If you must use a shared computer, always use the web-based version of Office in an Incognito or Private browsing window. Be sure to decline any prompts asking to 'Stay signed in' or 'Remember this device', and always close the entire browser when you are finished.

Microsoft Office Security Issues