Commvault incident

Exchange Online Backup Failures (Forbidden Errors)

Notice Ongoing View vendor source →

Commvault is currently experiencing a notice incident affecting East US2 and France Central and 1 more component, which began 77d ago. The vendor's full update timeline is below.

Started
Apr 01, 2026, 04:50 PM UTC
Resolved
Ongoing
Duration
● 77d 4h
Detected by Pingoru
Apr 01, 2026, 04:50 PM UTC

Affected components

East US2France CentralCanada Central

Update timeline

  1. identified Apr 01, 2026, 04:50 PM UTC

    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] Resolution: Additional information and steps to resolve this can be found here, https://support.commvault.com/Article/Details/KA-191556