Resolved after 1 day 7 hours, on September 29, 2026.
All known issues with the Sign API and our authentication migration are now resolved and complete.
Update timeline
- investigating Sep 29, 2026, 02:49 PM UTC
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.
- identified Sep 29, 2026, 03:58 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Sep 29, 2026, 07:24 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Sep 30, 2026, 10:28 PM UTC
All known issues with the Sign API and our authentication migration are now resolved and complete.
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