Microsoft To Do synchronization problems

Question

Microsoft To Do synchronization problems

Mathieu Carbou 0

I have Microsoft To Do synchronization problems since yesterday.

https://to-do.live.com/tasks/today is unreachable

All iOS and macOS ToDo apps cannot sync.

0 comments

1 answer

Your answer

Answer 1

Kai-H 24,330 Microsoft External Staff Moderator

Hi, Mathieu Carbou

Since the website and every Apple device stopped working at the same time, this is more likely a service, account, or network connection issue than separate problems with each app. The public service page currently shows Microsoft consumer services as operational, so the issue may be regional or account-specific.

Here are some suggestions you can try:

Do not sign out or reinstall the apps yet. Any tasks created while synchronization is failing could be lost if they have not reached the server.

Turn off any VPN, proxy, ad blocker, or security filter, then try Microsoft To Do on the web using a private browser window. Also test with a different connection, such as mobile data. VPNs, firewalls, and blocked Microsoft or live.com addresses can prevent To Do from connecting.

Update Microsoft To Do from the iOS and Mac App Stores, then restart both devices.

If the web page remains unreachable on different networks, use Help & Feedback > Get support in To Do and include screenshots of the browser error and sync message. This will allow support to check the affected account directly.

Thank you for your patience in reading, I hope this information has been helpful to you.

If the answer is helpful, please click "Yes" and kindly upvote it. If you have extra questions about this answer, please click "Comment."

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Mathieu Carbou 0 Reputation points

2026-08-04T09:38:50.4966667+00:00

This is not a connections issue: all devices were connected to internet and without any vpn or firewall preventing outbound connections. Further more my account has an active Microsoft family subscription.

I’ve switched to another alternative. This issue was since Saturday so I had to find another solution.
Kai-H 24,330 Reputation points Microsoft External Staff Moderator

2026-08-05T06:21:31.6266667+00:00

Hi, Mathieu Carbou

Thank you for clarifying. Since the web version and all your iOS and macOS devices failed together, despite normal internet access, this strongly points to a Microsoft-side or account-specific synchronization problem rather than anything on your devices.

An active Microsoft 365 Family subscription confirms the subscription is valid, but To Do also works with any active personal Microsoft account, so the subscription itself would not prevent this type of server-side failure. Similar cases where To Do stopped working across the web and multiple devices have previously been associated with service disruptions.

I completely understand why you moved to another service after being unable to access your tasks since Saturday. At this point, local troubleshooting is unlikely to be useful. If you want the issue recorded, the remaining option is to contact To Do support through Settings > Help & Feedback > Get support, so they can investigate the account’s synchronization state. The official support page confirms that in-app messaging connects directly to the To Do support team.