No Connection Error When Accessing Other Users Non-Shared Calendar Outlook 365

Jon Mercer 1,011 Reputation points
2022-03-24T23:14:01.513+00:00

This is not a shared calendar, and it only happens with one employee. No one else has this issue. If they go into the calendar and add someone else's calendar, it says updating for a bit, and then no connection.

  1. Same issue in Safe Mode, so is not an add-on, and there is nothing from Apple in there, everything is Microsoft.
  2. Works fine in OWA, so not an exchange online or exchange permissions issue.
  3. Renamed OST and NST and had them rebuild. Rather not rename the whole Outlook folder, or rebuild the profile since they have a fair number of other mailboxes that need long passwords.
  4. Ran the full Office Repair
  5. Currently running Microsoft® Outlook® for Microsoft 365 MSO (Version 2202 Build 16.0.14931.20128) 64-bit
  6. Ran SaRA for calendar issues. It came up with an error that said there was a permission issue, but unless Outlook has different permissions than OWA, I wouldn't suspect that is the issue.
Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Hugo Lemmens 81 Reputation points
    2022-05-13T07:20:59.19+00:00

    Hi Jon,
    hoping this one will work for you too
    Came across one post which suggested to make sure EWS was enabled for that account. (yet another acronym Exchange Web Services).
    Found the location where to toggle it on/off
    MS 365 Admin portal/user/ and our problem has been resolved.
    201731-image.png

    201723-image.png

    1 person found this answer helpful.

7 additional answers

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  1. Faery Fu-MSFT 19,006 Reputation points
    2022-03-25T08:45:34.933+00:00

    Hi @Jon Mercer ,

    Welcome to our forum!

    I have tried reproduced your scenario, and l get the following screenshot:

    186809-no-connection.jpg

    To fix it, go to the Send/Recive Tab, click work offline, click work offline again, it prompt for a password, then reconnect again

    186864-offline.png


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  2. Jon Mercer 1,011 Reputation points
    2022-04-13T15:45:07.687+00:00

    As an update, I scorched earth Office 365 by running the office scrubber and renamed the Outlook folder. Rebooted, reinstalled office and still has the same issue. I noticed that it rebuilt everything since all shared email boxes are stored in the OST.

    They can access the calendar of shared accounts, but not personal accounts in Outlook, but still can access them in OWA. Are there any other thoughts on this?

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  3. Hugo Lemmens 81 Reputation points
    2022-05-12T08:00:43.667+00:00

    Exactly same problem here, appearing out of nowhere with one single user.
    User has a MS 365 Bus Premium licence and runs on Azure Virtual Desktop
    Tried all of the above - no improvement.

    • OWA works fine
    • toggling offline back and forth - no change
    • turning cache off - no change

    Created same mail profile for that user on a different PC - outside of their AVD environment in Outlook running of a fat client.
    Exactly same issue.
    Tried to open properties of the non-shared calendar
    201269-image.png

    Hoping someone will find a solution...


  4. Jon Mercer 1,011 Reputation points
    2022-05-13T15:23:29.357+00:00

    Hugo, that is a good find, theirs for some reason was disabled. I am guessing since she is an older employee, that way before my time, they were turning off everything except for two or three things in there, because all recent employee's I looked at, everything in there is enabled.

    Unless it is a propagation thing, it still didn't work, but they also have everything except the first two disabled, so might require multiple things of the list that is left.

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