Outage in Formstack
Formstack Sign API Authentication Issues
Resolved MinorIncident Report
Summary AI Generated
Formstack Sign experienced a 31.7-hour authentication issue affecting its API and Documents components, where customers were unable to send documents via the API despite successfully generating access tokens, with some also seeing a null API secret in their accounts. The root cause was traced to an authentication migration, and a fix was implemented and monitored before full resolution. All issues were confirmed resolved on September 30, 2026.
We are investigating reports that some Formstack Sign customers are unable to send documents through the API. Affected requests may return a “Request requires authentication” error despite successfully generating an access token. Some customers may also see a null API secret within their account.
Our team is actively investigating and will provide additional updates as more information becomes available.
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Latest Updates ( sorted recent to last )
RESOLVED
15 days ago - at 09/30/2026 10:28PM
All known issues with the Sign API and our authentication migration are now resolved and complete.
MONITORING
16 days ago - at 09/29/2026 07:24PM
A fix has been implemented and we are monitoring the results.
IDENTIFIED
16 days ago - at 09/29/2026 03:58PM
The issue has been identified and a fix is being implemented.
INVESTIGATING
16 days ago - at 09/29/2026 02:49PM
We are investigating reports that some Formstack Sign customers are unable to send documents through the API. Affected requests may return a “Request requires authentication” error despite successfully generating an access token. Some customers may also see a null API secret within their account.
Our team is actively investigating and will provide additional updates as more information becomes available.
Latest Formstack outages
Sign Integration Authentication Issues - 10 days ago
Delayed Documents Deliveries After Sign Completion - 15 days ago
Documents with Sign Delivery are failing - 17 days ago
Formstack Sign authentication migration - 17 days ago
Streamline: - 23 days ago
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