Error Message

 << Job Status Log>>
Connection to Office 365 failed with Error - Could not get MsgStores. Make sure Outlook update - kb3114941 32 bit is installed. For details see Identification and Collection Guide..
Ended collecting mailbox = user@mydomain.com, Status=Failure

<< ExchCollection_Output.log >>
(#####:pid:#####:user@mydomain.com) MsgStoreDN empty. Invalid parameters passed to CreateStoreEntryID2.

By default, eDiscovery batches 100 users per O365 AutoDiscovery request.  However, Microsoft has limited the number of users per request to 90.  O365 AutoDiscovery will fail to respond with the GetUserSettings request for these users, so no Outlook profile can be created to collect from these mailboxes. A subsequent batch with less than this 90 user limit will receive a response and these users will be collected if the user count in this batch is less than 90. However, the overall collection task will complete as a Failure as not all mailboxes were collected.

The number of users per O365 AutoDiscovery batch request must be adjusted to a number equal to or lower than 90 by setting the following ESA property in Property Browser.

• Log in to Veritas eDiscovery as a user with System Administrator privileges.
• Click System > Support Features.
• Select Property Browser from the Choose a Support Feature drop-down.
• Select System from the Select the case (or system)
• Enter the following value in the field Name of property to change:
• esa.icp.exchange.online.email.batchcount
• Enter a value of 90 or less in the field New value (leave blank to remove)
• Check the Confirm change. Are you sure? checkbox.
• Click Submit.

A services restart is not required for this value to take effect.

This issue was resolved in eDiscovery version 9.1.0