Why do I get a 503 error in To Do on the web?

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Microsoft To Do

If you're trying to sign in to Microsoft To Do on the web and see a 503 error, this could be related to limitations in the local network or restrictions on a corporate network.

Check with your IT admin to make sure none of these URLs are blocked:

  • .microsoft.com
  • .msecnd.net
  • .live.com
  • graph.windows.net
  • graph.microsoft.com
  • .office.com
  • .office.net
  • .office365.com
  • static2.sharepointonline.com
  • todo-web-endpoint.azureedge.net
  • .microsoftonline.com
  • .microsoft.io
  • .windows.net
  • microsoft-my.sharepoint.com
  • microsoft.sharepoint.com
  • login.microsoftonline.com