[Alert] Inconsistent mailbox report data in M365 Manager Plus due to Microsoft service incident - EX1078664

[Update - June 06, 2025] Microsoft incident EX1078664 resolved: M365 Manager Plus Exchange Online reports fully operational.

Microsoft has confirmed the resolution of their service incident EX1078664. This affected the Get-MailboxStatistics cmdlet used to collect the data for some Exchange Online reports in M365 Manager Plus. All affected reports are now working as expected.

Microsoft has acknowledged a service incident (Incident ID: EX1078664) that is currently affecting the usage of the Get-MailboxStatistics cmdlet in Exchange Online PowerShell. When the cmdlet is used to collect mailbox data, it fails for some mailboxes, and admins receive an error that states "Failed to commit the change on object" "because access is denied".

As M365 Manager Plus retrieves mailbox statistics from Exchange Online using the same cmdlet, the following reports may fail to generate with the error "Forbidden. You do not have permission to perform this operation" or display inconsistent data.

Archive Mailbox Sizes
Attachment by File Size
Current Mailbox Size vs Quota
Inactive Exchange Users
Inactive Mailboxes
Inactive Shared Mailboxes
Mailbox Sizes
Never Logged On Exchange Users
OWA Logon by Users
Shared Mailbox Size

All builds of M365 Manager Plus are currently impacted by this Microsoft service incident. We understand how important reliable data is for your Microsoft 365 administration. We are actively monitoring the situation, and once Microsoft resolves the underlying issue, we will promptly ensure the affected reports in M365 Manager Plus work as intended. You can track the updates for this issue from the Service Health tab in the Microsoft 365 admin center.

To stay informed of such critical incidents, you can make use of M365 Manager Plus' real-time service monitoring capabilities. Set up real-time alerts, track the health of your Microsoft 365 services, and get notified of failures that can impact your operations.

If you have any further questions, please leave a comment here or reach out to m365managerplus-support@manageengine.com. We are happy to help you out.