Outage in Bandwidth
Messaging API Incident
Resolved MajorIncident Report
Summary AI Generated
Bandwidth's messaging API experienced a major incident where outbound messaging requests returned 400 errors when media files were invalid or set to "null", affecting MMS messaging services and REST APIs. The incident impacted multiple messaging components including MM4, HTTP MMS messaging, and toll-free MMS outbound services for 1.5 hours. Teams identified the source of the issue and restored normal API behavior after monitoring for stability.
Bandwidth teams are investigating an incident impacting outbound messaging API requests where 400 errors are being returned. Specifically when media file is invalid or set to “null”. Teams are working to restore expected behavior.
Components affected
Bandwidth MMS Messaging (MM4) Bandwidth REST APIs - HTTP MMS Messaging Bandwidth Toll Free MMS - OutboundTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
24 days ago - at 05/14/2026 04:36AM
This incident has been resolved.
MONITORING
24 days ago - at 05/14/2026 03:53AM
Teams are observing expected API behavior and are monitoring for stability.
IDENTIFIED
24 days ago - at 05/14/2026 03:17AM
The source of the incident has been identified and work is underway to restore expected API behavior.
INVESTIGATING
24 days ago - at 05/14/2026 03:06AM
Bandwidth teams are investigating an incident impacting outbound messaging API requests where 400 errors are being returned. Specifically when media file is invalid or set to “null”. Teams are working to restore expected behavior.
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