Outlook 365 crash when click on Shared Mailbox Inbox

Moiz Vohra 1 Reputation point
2020-08-25T19:37:10.023+00:00

We are facing issue with one user while he select Shared mailbox Inbox in outlook his outlook keep crashing other all expect shared mailbox inbox folder other folders are accessible and working fine this issue is strange issue and tired below solution to fix it but no luck

  1. Disable all add-ins
  2. uninstall and reinstall outlook
  3. try login on the different machine but issue exists
  4. Shared Mailbox moved to different Mailbox Database
  5. Remove delegation access and add in back

Outlook Version is Office 365 Application
Windows Version is Windows Enterprise 10
Exchange Server 2016 CU17

Please advise for to resolove this 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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  1. Andy David - MVP 144.2K Reputation points MVP
    2020-08-25T20:51:52.88+00:00

    Hi there!

    Try disabling "Download Shared Folders"
    and restart Outlook and see if that fixes it.

    https://support.microsoft.com/en-us/help/3115602/performance-and-synchronization-problems-when-you-work-with-folders-in

    To disable the caching of all shared folders in Outlook 2010 and later versions, follow these steps:

    On the File tab, click Account Settings in the Account Settings list.
    In the Account Settings dialog box, click the E-mail tab and then double-click your Microsoft Exchange Server account.
    In the Change Account dialog box, click More Settings.
    In the Microsoft Exchange dialog box, click the Advanced tab.
    Click to clear the Download shared folders check box.

    20255-image.png

    If not, try safe mode:

    https://support.microsoft.com/en-us/help/4026478/outlook-open-outlook-in-safe-mode
    Outlook.exe /safe

    that will ensure the add-ins are disabled.

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  2. Lydia Zhou - MSFT 2,371 Reputation points Microsoft Employee
    2020-08-26T02:17:15.933+00:00

    Do you mean only one user have this issue when he check the Inbox of a specific shared mailbox?
    Does the user check the shared mailbox with AutoMapping, or open the shared mailbox manually?

    As AD-7937 mentioned above, if the user uses Outlook Cached mode, please check and unselect "Download shared folders".
    Please make sure the user installs and uses the latest update for Outlook. When try to use a different machine, is the same Outlook version installed? Please also check if any differences about the Outlook version or settings between this user and others who can check the same shared mailbox successfully.

    If the response is helpful, please click "Accept Answer" and upvote it.