Assume that there are more than 90 users in a Microsoft Exchange Server 2013 environment. Their primary mailboxes are located in different on-premises databases, and their Archive mailboxes are located in the cloud. When you run an eDiscovery estimate search, you receive an error message that looks something like:

[FailedToGetRootFolders] Export failed with error type: 'FailedToGetRootFolders'. Message: ErrorInternalServerError : An internal server error occurred. The operation failed.

Additionally, you may experience one or both of the following issues:

  • The Archive databases fail, and you receive an error message in Microsoft Outlook that looks something like:

    Cannot expand the folder. The set of folders cannot be opened. Microsoft Exchange is not available. Either there are network problems or the Exchange server is down for maintenance.

  • When you run the Test-ArchiveConnectivity cmdlet to verify archive functionality, you receive the following result:

    The Autodiscover request failed.


This is a known issue in Exchange Server 2013. 


To fix this issue, install cumulative update 10 for Exchange Server 2013.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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