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

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  1. Anonymous
    2023-05-24T15:37:23+00:00

    No, it started working for us about a month or so ago. Here is the version we are using.

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  2. Anonymous
    2023-05-24T16:07:55+00:00

    My client got updated to the version below and the To Do does not open up but gives the same error. Microsoft better look into this, I am getting more users that are frustrated.

    Update: Not sure what happened tried it again this afternoon and it is working. I will see if it is also opening on the rest of my users clients.

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  3. Anonymous
    2023-05-26T09:25:42+00:00

    Hmm, I'm on the same version and build but it still doesn't work... have resorted to installing the To Do website as an 'app' in Edge so that it opens in a standalone window and I can open from the taskbar. Hopefully it starts working within Outlook soon!

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  4. Anonymous
    2023-06-01T17:07:44+00:00

    How this was resolved for one of our users:

    Client had a 22+ GB Outlook account, and a 349 downloads (many dupes-one spreadsheet alone had 38 revisions) and some other data, and only a few MB left on his hard drive.

    Cleared out a little over 21 GB and his Tasks started working again

    Note: Prior to clearing his HDD, I had done Win+R (Run) and ran outlook /resettodobar - which did not work initially, but may have had an effect on the final outcome.

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  5. Anonymous
    2023-06-06T18:47:49+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.

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