Exchange Online Backup Failures (Forbidden Errors)
Identified - Description: 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
Jun 22, 2026 - 12:38 UTC
Web Portal Operational
East US2 Operational
REST API Operational
East US2 Operational
Reports Operational
East US2 Operational
Usage & Metering Operational
East US2 Operational
Active Directory Operational
Canada Central Operational
East US2 Operational
France Central Operational
Dynamics 365 Operational
East US2 Operational
France Central Operational
Canada Central Operational
Database Operational
East US2 Operational
France Central Operational
Canada Central Operational
Endpoint Operational
France Central Operational
East US2 Operational
Canada Central Operational
File & Object Operational
North Central US Operational
West US Operational
East US2 Operational
Canada Central Operational
East US Operational
France Central Operational
Office 365 Operational
East US2 Operational
France Central Operational
Canada Central Operational
SalesForce Operational
France Central Operational
Canada Central Operational
East US2 Operational
VM & Kubernetes Operational
Canada Central Operational
East US Operational
West US Operational
North Central US Operational
East US2 Operational
France Central Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Oct 14, 2026

Weekly Scheduled maintenance
Completed - The scheduled maintenance has been completed.
Oct 14, 08:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 14, 07:00 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.
Oct 11, 08:01 UTC

Oct 13, 2026

No incidents reported.

Oct 12, 2026

No incidents reported.

Oct 11, 2026

No incidents reported.

Oct 10, 2026

No incidents reported.

Oct 9, 2026

No incidents reported.

Oct 8, 2026

No incidents reported.

Oct 7, 2026

Weekly Scheduled maintenance
Completed - The scheduled maintenance has been completed.
Oct 7, 08:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 7, 07:00 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.
Oct 4, 08:02 UTC

Oct 6, 2026

No incidents reported.

Oct 5, 2026

No incidents reported.

Oct 4, 2026

No incidents reported.

Oct 3, 2026

No incidents reported.

Oct 2, 2026

No incidents reported.

Oct 1, 2026

No incidents reported.

Sep 30, 2026

Weekly Scheduled maintenance
Completed - The scheduled maintenance has been completed.
Sep 30, 08:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 30, 07:00 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.
Sep 27, 08:01 UTC
Incident History Powered by Atlassian Statuspage