Sign-in & Login Problems

Fix Cannot Sign Out of Microsoft To Do or Switch Accounts on Mac

Algirdas Jasaitis Oct 9, 2026 869 views

Question details

The user is unable to sign out of or switch accounts in Microsoft To Do on a Mac because the application automatically selects an inaccessible work account and blocks further navigation.

Cannot Sign Out of Microsoft To Do or Switch Accounts on Mac

Product: Microsoft To Do
Device & OS: macOS
Scenario: Attempting to launch the Microsoft To Do app and sign in with a different or personal account.
Observed behavior: The app prompts for sign-in but defaults to an inaccessible work account, preventing the user from navigating the UI to switch accounts, even after uninstalling and reinstalling the app.

Before you start

Ensure you have the login credentials for the correct Microsoft account you wish to use, and completely quit the Microsoft To Do app from your Mac dock before attempting these fixes.

Solution 1Recommended

Switch Accounts via the App Profile Menu

Use this standard method if you can briefly bypass the login prompt to access the main Microsoft To Do interface.

If the application allows you to reach the main interface before locking up, you can manage and remove the problematic account directly from the settings menu.

Open Microsoft To Do

Launch the Microsoft To Do application on your Mac.

Access Account Settings

Click on your account profile icon located in the upper-right corner of the app window.

Manage Accounts

Select 'Manage accounts' from the dropdown menu, then choose the option to remove the inaccessible old work account.

Sign In with a New Account

Once the old account is removed, click 'Add account' or sign in using your preferred personal or active work account.

Quick Tip: If you also use a Windows device, make sure to remove the old work account under Windows Settings > Accounts > Access work or school to prevent it from syncing back.

Solution 2

Clear Microsoft App Caches and Keychain on Mac

Use this method if the app completely blocks you from navigating the UI and forces the sign-in prompt for the old account.

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Frequently Asked Questions

Why does reinstalling Microsoft To Do on Mac not remove the old account?

On macOS, application data, caches, and Keychain credentials often remain intact even when the main application file is deleted from the Applications folder. You must manually clear the Keychain or container folders to remove stored logins.

How do I force Microsoft To Do to prompt for a new login?

You can force a new login prompt by signing out from the 'Manage accounts' menu within the app, or by deleting the associated Microsoft login tokens from your Mac's Keychain Access utility.

Can I use multiple accounts in Microsoft To Do simultaneously?

Yes, you can add multiple accounts (such as a personal account and a different work account) and switch between them at any time using the profile menu in the upper-right corner of the app.

Login & Account Issues