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
Apr 12, 2026 - 08:01 UTC
Completed -
The scheduled maintenance has been completed.
Apr 8, 04:00 UTC
In progress -
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 8, 03:00 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.
Apr 5, 08:01 UTC