Incorrect output when you run the Get-CASMailbox cmdlet to view the HasActiveSyncDevicePartnership attribute

PROBLEM
In a Microsoft Exchange Online environment, you run the Get-CASMailbox cmdlet to view the HasActiveSyncDevicePartnership attribute. The output shows that the mailbox has no device partnership. However, the user has one or more devices that are synchronizing with their mailbox. 
SOLUTION
To resolve this issue, run the following command:
Get-CASMailbox <Alias> -RecalculateHasActiveSyncDevicePartnership
Note The RecalculateHasActiveSyncDevicePartnership parameter was introduced to the Get-CASMailbox cmdlet in build 15.00.0980.000 of Office 365. To determine the build of Office 365 that the mailbox is on, run the following command:
Get-Mailbox <Mailbox> | fl AdminDisplayVersion

MORE INFORMATION
The RecalculateHasActiveSyncDevicePartnership parameter recalculates the value of the HasActiveSyncDevicePartnership attribute on the mailbox. The value is automatically updated if it's determined to be incorrect. You don't have to specify a value for the HasActiveSyncDevicePartnership attribute.

For more info, see Get-CASMailbox.

Still need help? Go to the Office 365 Community website.
Properties

Article ID: 3001236 - Last Review: 06/09/2016 22:53:00 - Revision: 5.0

Microsoft Exchange Online, Exchange Server 2016 Enterprise Edition, Exchange Server 2016 Standard Edition, Microsoft Exchange Server 2013 Enterprise, Microsoft Exchange Server 2013 Standard

  • o365e o365m o365p o365022013 o365 o365a kbbug kbfix KB3001236
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