Outage in ShipEngine
UPS Authentication Errors
Resolved MajorIncident Report
Summary AI Generated
ShipEngine experienced a major incident where UPS accounts encountered high frequency authentication errors when attempting rating and label creation functions, with users receiving "Invalid Authentication Information" errors. The issue affected UPS US operations for 1.2 hours, though not all UPS accounts were impacted equally. The service provider restored functionality and the incident was fully resolved after monitoring confirmed error rates had returned to normal levels.
We have observed a high frequency of errors returned while attempting to perform various functions with UPS accounts such as rating and label creation. While the error rate is elevated, it is not universally impacting all UPS accounts similarly.
The following error is returned:
A shipping carrier error occurred: Invalid Authentication Information
The cause of this issue is being investigated.
Components affected
ShipEngine UPS USTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
about 1 month ago - at 06/11/2026 10:25PM
This incident has been resolved.
MONITORING
about 1 month ago - at 06/11/2026 09:48PM
The service provider has confirmed a restoration of functionality. Error rates have begun to fall.
We are continuing to monitor to ensure a full recovery.
INVESTIGATING
about 1 month ago - at 06/11/2026 09:15PM
We have observed a high frequency of errors returned while attempting to perform various functions with UPS accounts such as rating and label creation. While the error rate is elevated, it is not universally impacting all UPS accounts similarly.
The following error is returned:
A shipping carrier error occurred: Invalid Authentication Information
The cause of this issue is being investigated.
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