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Sign-in & Login Problems

How to Fix Microsoft To Do Login Loop on Mac

Bushra ParveenBushra Parveen Sep 25, 2026 871 views

Question details

The user is experiencing a continuous login loop in Microsoft To Do on macOS, where the app repeatedly prompts for the password of an old or inactive account.

How to Fix Microsoft To Do Login Loop on Mac
Product
Microsoft To Do
Device & OS
macOS
Scenario
The user's company email or Microsoft account has changed, and they need to sign in with the new credentials to access their tasks.
Observed behavior
The application repeatedly requests the password for the old account. Reinstalling the application normally does not clear the stored account data, causing the login loop to persist.
Before you start

Ensure you have your new Microsoft account credentials handy. Completely quit the Microsoft To Do application on your Mac before attempting to clear the cache files.

Solution 1Recommended

Clear App Cache and Reinstall Microsoft To Do

This method forces macOS to forget the old account credentials by removing the hidden container files associated with the Microsoft To Do application.

On macOS, simply moving an application to the Trash does not delete its cached library files. To fix persistent login loops, you must manually delete the application's specific container folders.

1
Force close the old prompt

If the password prompt keeps appearing, close it several times until you can access the app menu. Go to Preferences and select 'Sign out'. If you still cannot sign out, proceed to the next step.

2
Uninstall the application

Quit Microsoft To Do completely. Open your Applications folder and drag the Microsoft To Do app to the Trash.

3
Delete cached container files

Open Finder, press Command+Shift+G on your keyboard, and enter '~/Library/Group Containers/UBF8T346G.com.microsoft.to-do-mac'. Delete this folder. Next, open the 'Go to Folder' menu again, enter '~/Library/Containers/com.microsoft.to-do-mac', and delete that folder as well.

4
Restart and reinstall

Restart your Mac to ensure all background processes are cleared. Open the Mac App Store, search for Microsoft To Do, reinstall the application, and launch it to sign in with your new account.

Clear App Cache and Reinstall Microsoft To Do
Account Successfully Switched: The password prompt might still appear briefly during the initial fresh launch, but you will now be able to properly dismiss it, sign out of any ghost sessions, and log in with your new credentials.
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  1. 1. Download WPS Office: Visit the official WPS Office website and download the installation package designed for macOS.
  2. 2. Install and Launch: Drag the WPS Office icon to your Applications folder and open the app to create your free account.
  3. 3. Open Your Files: Drag and drop your existing Microsoft Office files into WPS Office to continue your work seamlessly.
Free and lightweight office suite optimized for macOSFully compatible with Microsoft Office formats (DOCX, XLSX, PPTX)Simplified account management with no complicated login loopsAll-in-one tabbed interface to manage multiple documents effortlessly
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Frequently Asked Questions

Why does reinstalling Microsoft To Do not fix the login loop on Mac?

Simply moving the application to the Trash does not delete the hidden cache and container files stored in your macOS Library. These files retain your old account credentials, causing the app to prompt you for the old password upon reinstallation.

How do I access the hidden Library folder on macOS?

Open a Finder window and press the keyboard shortcut Command + Shift + G. In the 'Go to Folder' dialog box that appears, type the specific path (such as ~/Library/Containers) and press Enter.

Will deleting the Microsoft To Do container folders delete my tasks?

No, your tasks are securely backed up and synced to your Microsoft account in the cloud. Deleting the local cache only removes the app's local data and sign-in state on that specific Mac. Once you log back in, your tasks will resync.