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 - 12:15 UTC
Web Portal Operational
Southeast Asia Operational
REST API Operational
East US2 Operational
Reports Operational
Southeast Asia Operational
Usage & Metering Operational
Southeast Asia Operational
Active Directory Operational
Central India Operational
Japan West Operational
Southeast Asia Operational
Dynamics 365 Operational
Central India Operational
Southeast Asia Operational
Japan West Operational
Database Operational
Japan West Operational
Central India Operational
Southeast Asia Operational
Endpoint Operational
Central India Operational
Southeast Asia Operational
Japan West Operational
File & Object Operational
Central India Operational
Japan West Operational
Southeast Asia Operational
Office 365 Operational
Central India Operational
Japan West Operational
Southeast Asia Operational
SalesForce Operational
Southeast Asia Operational
Japan West Operational
Central India Operational
VM & Kubernetes Operational
Japan West Operational
Central India Operational
Southeast Asia Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Weekly Scheduled maintenance Nov 10, 2026 19:00-20:30 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 Nov 07, 2026 - 08:01 UTC

Nov 9, 2026

No incidents reported today.

Nov 8, 2026

No incidents reported.

Nov 7, 2026

No incidents reported.

Nov 6, 2026

No incidents reported.

Nov 5, 2026

No incidents reported.

Nov 4, 2026

No incidents reported.

Nov 3, 2026

Weekly Scheduled maintenance
Completed - The scheduled maintenance has been completed.
Nov 3, 20:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 19:00 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 31, 08:01 UTC

Nov 2, 2026

No incidents reported.

Nov 1, 2026

No incidents reported.

Oct 31, 2026

No incidents reported.

Oct 30, 2026

No incidents reported.

Oct 29, 2026

No incidents reported.

Oct 28, 2026

No incidents reported.

Oct 27, 2026

Weekly Scheduled maintenance
Completed - The scheduled maintenance has been completed.
Oct 27, 20:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 27, 19:00 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 24, 08:01 UTC

Oct 26, 2026

No incidents reported.

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