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Outage in Stamps.com

Issues Generating Rates for Some Services Through Windows Clients

Resolved Minor
September 22, 2026 - Started 4 days ago - Lasted about 3 hours
Official incident page

Incident Report

Stamps.com Engineers have identified an issue that may temporarily affect some of our customers' ability to generate rates for Priority Mail and UPS services through our Windows Clients. The website is unaffected and should be used as a workaround for now. We are working to quickly resolve this issue and will provide an update when it is available. We apologize for the inconvenience.
Components affected
Stamps.com Software (Printing Postage Using our Windows Application)

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Latest Updates ( sorted recent to last )
RESOLVED 4 days ago - at 09/22/2026 11:09PM

Stamps.com Engineers have fixed the technical issue and all systems are functioning normally. Thank you for your patience.

INVESTIGATING 4 days ago - at 09/22/2026 08:29PM

Stamps.com Engineers have identified an issue that may temporarily affect some of our customers' ability to generate rates for Priority Mail and UPS services through our Windows Clients. The website is unaffected and should be used as a workaround for now. We are working to quickly resolve this issue and will provide an update when it is available. We apologize for the inconvenience.

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