2016 Essentials dashboard crash by office 365 add-in

IT volunteer 21 Reputation points

All of a sudden, the dashboard started crashing and naming the office 365 add-in as the cause. Is there a way to re-install that add-in? I can't think of anything else to do. If I disable it through safe-mode, the dashboard starts up fine but the Office 365 is missing, which I badly need. Any ideas?

Windows Server 2016
Windows Server 2016
A Microsoft server operating system that supports enterprise-level management updated to data storage.
2,361 questions
Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
12,030 questions
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  1. Limitless Technology 39,331 Reputation points

    Hello there,

    Check the Dashboard.log file (%ProgramData%\microsoft\windows server\logs). Besides, please check Event Viewer and confirm that if there is any relate event has been logged.

    If possible, please disable 3rd party process temporarily, re-start system in Clean Boot and confirm that if tab will crash again.

    Besides, please try to verify the installation state of .Net Framework – tool and step mentioned in blog “.NET Framework Setup Verification Tool User’s Guide”:

    Open Dashboard – Settings – Safe Mode, disable Users tab, close and re-open Dashboard, re-enable Users tab, close and re-open Dashboard to check the result.


    --If the reply is helpful, please Upvote and Accept it as an answer--

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  1. Dillon Silzer 54,281 Reputation points

    Hi @IT volunteer

    I believe this may be because it has been depreciated.

    Cited from https://community.spiceworks.com/topic/2332808-office-365-tab-not-showing-in-windows-server-2016-essential-dashboard

    Windows Server Essentials Experience Role has been deprecated


    Windows Server Essentials Experience Role has been deprecated (Microsoft Learn)



    If this is helpful please accept answer.

  2. IT volunteer 21 Reputation points

    Thanks for the reply and the suggestions. To be clear, the dashboard does come up if I disable the OFFICE 365 add-on. I followed all your recommendations and got the following:

    • dashboard log: it shows that it crashes around the SharePointUser loading (??). Here's what appears to be the relevant part:

    [15124] 220816.155905.7450: O365Manager: TResult : SharePointUser, args : Microsoft.WindowsServerSolutions.Common.ProviderFramework.OperationInvokeEventArgs1[Microsoft.WindowsServerSolutions.O365Integration.SharePointUser] [15124] 220816.155905.7460: O365Manager: actualArgs : Microsoft.WindowsServerSolutions.Common.ProviderFramework.OperationInvokeEventArgs1[Microsoft.WindowsServerSolutions.O365Integration.SharePointUser]
    [5156] 220816.155905.7480: Dashboard.Forms: !!!!FATAL: Dashboard shutting down due to unhandled exception: One or more errors occurred.
    [5156] 220816.155906.0742: Dashboard.Forms: System.AggregateException: One or more errors occurred. ---> System.ArgumentException: An item with the same key has already been added.
    at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
    at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
    at Microsoft.WindowsServerSolutions.O365Integration.SharePointLibraryManager.<RefreshSiteUsers>d__68.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---

    • "If possible, please disable 3rd party process temporarily, re-start system in Clean Boot and confirm that if tab will crash again.": I'm not sure what you mean by this
    • .NET fix: nothing came up as a problem
    • Open, closing, turning off "user", etc. didn't do anything

    Any other suggestions?

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  3. IT volunteer 21 Reputation points

    SOLVED: thanks to @Limitless Technology , I was able to get a better idea of what might have been happening. After I was pointed to the log file and reading it in detail, it looked like a user account had failed the AD sync. I went thru a number of accounts on the Azure AD and noticed that one account had been created twice. I deleted the one that didn't have any login info and that did it. I waited for the sync to automatically happen and that took care of it.


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