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 - 12:37 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
Australia East Operational
Canada Central Operational
East US2 Operational
UK South Operational
Dynamics 365 Operational
East US2 Operational
Australia East Operational
Canada Central Operational
UK South Operational
Database Operational
UK South Operational
Australia East Operational
Canada Central Operational
East US2 Operational
Endpoint Operational
East US2 Operational
Canada Central Operational
UK South Operational
Australia East Operational
File & Object Operational
East US2 Operational
Canada Central Operational
Office 365 Operational
Australia East Operational
East US2 Operational
UK South Operational
Canada Central Operational
Google Workspace Operational
US East 1 Operational
SalesForce Operational
Australia East Operational
Canada Central Operational
UK South Operational
East US2 Operational
VM & Kubernetes Operational
Canada Central Operational
East US2 Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Weekly Scheduled maintenance Oct 21, 2026 07:00-08:30 UTC

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 Oct 18, 2026 - 08:02 UTC

Oct 18, 2026

No incidents reported today.

Oct 17, 2026

No incidents reported.

Oct 16, 2026

No incidents reported.

Oct 15, 2026

No incidents reported.

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.

Incident History Powered by Atlassian Statuspage