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Fix Microsoft To Do Tasks Missing from Browser After Outlook Update

John Wilson Oct 10, 2026 869 views

Question details

Planned, recurring, and completed tasks are missing from the browser version of Microsoft To Do, despite still appearing correctly in the desktop application.

How to Fix Microsoft To Do Tasks Missing from Browser After Outlook Update

Product: Microsoft To Do / Outlook
Device & OS: not provided
Scenario: Accessing Microsoft To Do via a web browser after recently updating to the new Outlook experience.
Observed behavior: Tasks fail to display or synchronize in the web browser interface, while the desktop app retains all task data.

Before you start

Ensure you are logged into the exact same Microsoft account on your browser as you are on your desktop application before attempting to fix synchronization issues.

Solution 1Recommended

Clear Browser Data and Resync Account

Use this solution to eliminate corrupted browser cache that may prevent the new Outlook and To Do web interfaces from synchronizing properly.

Often, updating to the new Outlook experience leaves outdated cached data in your browser. Clearing this data forces the web application to fetch a fresh copy of your tasks from the Microsoft servers.

Sign out of Microsoft 365

Click on your profile picture in the top right corner of the Outlook/To Do web interface and select 'Sign out'.

Clear browser cache

Open your browser settings, navigate to privacy or history settings, and clear your cookies and cached site data for Microsoft domains.

Sign back in

Navigate to the Microsoft To Do website, sign in with your credentials, and wait a few moments for the tasks to fetch from the server.

Sync Delay: It may take a few minutes for large lists of recurring and completed tasks to populate fully after a fresh login.

Solution 2

Escalate to Microsoft Q&A Support

Since this is a known backend sync issue with the new Outlook transition, escalating to dedicated Microsoft engineers is required if basic troubleshooting fails.

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Frequently Asked Questions

Why are my tasks showing on the desktop app but not in the browser?

This is typically caused by a synchronization bug tied to the transition to the 'New Outlook' web experience, or outdated browser cache preventing the web app from fetching the latest data from Microsoft servers.

Can I revert to the old Outlook to see my tasks again?

Yes. In the top right corner of the Outlook web interface, you can usually find a toggle switch labeled 'New Outlook'. Turning this off will revert your view to the classic version, which may restore proper visibility of your To Do tasks.

How do I force Microsoft To Do to sync?

In the web browser, simply refreshing the page (F5 or Ctrl+R) usually forces a sync. On the desktop app, you can right-click your account name and select 'Sync', or close and reopen the application.

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