Our users are unable to use the Outlook To Do app in the Outlook desktop client.

Anonymous
2023-02-10T15:57:32+00:00

It gives the error "There was a problem connecting to this app". Just doing a quick Google search it looks like a widespread problem. I have a ticket open with MS but no answers yet.

It does work in the Outlook online app.

Outlook | Windows | Classic Outlook for Windows | For home

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

54 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Anonymous
    2023-11-02T01:38:58+00:00

    Reset the Office cache, it should fix the problem:

    1. Close Outlook
    2. Rename or Remove these two folders: %LOCALAPPDATA%\Microsoft\Office\16.0\wef %userprofile%\AppData\Local\Microsoft\Outlook\HubAppFileCache

    Re-open Outlook and click the "To-Do" shortcut, and it should open without issue.

    This fixed a user we had. Thank you for this.

    This fix was attempted and it did not work for me. On the latest version and build of Version 2307 (Build 16626.20170)

    If the problem comes back after doing these steps, check if you have the latest version of Microsoft To-Do on your mobile devices. I upgraded my Android app and the problem on the desktop went away.

    YEMV

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments
  2. Anonymous
    2023-03-09T15:03:37+00:00

    Thanks for that info! That lead me straight to what I needed to see. The release notes for the current Preview release of Office confirms the fix. I've installed this on several machines and can confirm that it's fixed. With this preview coming out at the beginning of this month then I do bet it will be included in the April release.

    Release Notes Current Channel (Preview) - Office release notes | Microsoft Learn

    Version 2303: March 06

    Version 2303 (Build 16227.20048)

    "We fixed an issue that caused users in Government Community Cloud tenants to be unable to launch To-Do in Outlook."

    Was this answer helpful?

    0 comments
  3. Anonymous
    2023-03-08T21:40:20+00:00

    We're having the same issue. I have opened a case on the To-Do support page. Have you received any updates yet?

    Was this answer helpful?

    0 comments
  4. Anonymous
    2023-02-10T18:51:01+00:00

    It works in OWA just not in the desktop client, below is the version. Ran both Quick and Online repair with no success.

    As a start repair your unknown Office version/ license type

    Is this Office web access and not Office desktop?

    Was this answer helpful?

    0 comments
  5. Anonymous
    2023-02-10T18:03:37+00:00

    As a start repair your unknown Office version/ license type

    Is this Office web access and not Office desktop?

    Was this answer helpful?

    0 comments