Identified - We are tracking reports of "Forbidden" errors during Office 365 backups caused by a recent Microsoft Exchange Online behavior change. This affects specific tenants and mailboxes using EWS.
Exchange Online jobs may show User Mailboxes reporting a Mailbox Status of: Throttling from Exchange, Failed to process mailbox due to [The request failed. Forbidden]
We will be doing quick maintenance to ensure the best experience for our customers.We will be back shortly and operations that were in progress will immediately resume. Posted on
May 30, 2026 - 08:01 UTC
Completed -
The scheduled maintenance has been completed.
May 26, 18:30 UTC
In progress -
Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 26, 17:00 UTC
Scheduled -
We will be doing quick maintenance to ensure the best experience for our customers.We will be back shortly and operations that were in progress will immediately resume.
May 23, 08:01 UTC
Resolved -
This incident has been resolved.
May 19, 21:14 UTC
Monitoring -
A fix has been implemented and we are monitoring the results.
May 19, 13:20 UTC
Investigating -
We are currently investigating an intermittent performance issue affecting our Command Center. Some users may experience slower-than-usual page load times, particularly on certain pages. Our engineering team is actively working to identify the root cause and implement a resolution. We will continue to provide updates as we make progress.
May 18, 13:28 UTC
Completed -
The scheduled maintenance has been completed.
May 19, 18:30 UTC
In progress -
Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 19, 17:00 UTC
Scheduled -
We will be doing quick maintenance to ensure the best experience for our customers.We will be back shortly and operations that were in progress will immediately resume.
May 16, 08:02 UTC
Resolved -
This incident has been resolved.
May 18, 04:02 UTC
Investigating -
We are currently experiencing degraded backup performance for Microsoft 365, which may impact backup SLA. Our engineering team is actively investigating the issue and working to restore normal performance as quickly as possible. We will provide further updates as more information becomes available
Apr 20, 23:10 UTC