Minor incident

Intellistack: Sign Integration Authentication Issues

Affected: API & Document Generation, Documents

Current status of Intellistack: Operational — live Intellistack status

Timeline

1. Oct 5, 2026, 17:42 UTC
   identified
   We have identified an issue causing some Formstack Sign integrations, including Documents-to-Sign deliveries, to lose authentication unexpectedly. Affected deliveries may fail with an authentication error, even if the connection was recently reauthenticated. Our Engineering team is actively working to deploy a permanent fix. We will provide another update as soon as the fix has been released.
2. Oct 5, 2026, 18:23 UTC
   monitoring
   A fix has been deployed to prevent Formstack Sign connections from losing authentication unexpectedly, and we are monitoring the results. We are also working to automatically restore authentication for previously affected connections. Customers who need to resume processing immediately may manually reauthenticate their Formstack Sign connection. We will provide another update once the restoration process is complete.
3. Oct 5, 2026, 19:42 UTC
   resolved
   The issue causing some Formstack Sign connections to lose authentication unexpectedly has been resolved. A fix has been deployed, and authentication has been restored for affected connections. Customers should now be able to process Documents-to-Sign deliveries normally. If you continue to receive an authentication error, please reauthenticate your Formstack Sign connection and retry the delivery. Thank you for your patience while we worked to resolve this issue.

Updates as published by Intellistack (original).