Outage in Formstack
Investigating intermittent Salesforce Delivery authentication and merge failures.
Resolved MinorIncident Report
Summary AI Generated
Formstack experienced intermittent Salesforce Delivery authentication and merge failures due to recent Salesforce OAuth/security changes, affecting the API & Document Generation components for 3 hours. Users encountered "INVALID_SESSION_ID: Session expired or invalid" and "Could not refresh your Salesforce access token" errors, with temporary workarounds requiring re-authentication of Salesforce connections. The engineering team identified and implemented a fix, resolving the issue while advising customers to re-authenticate their Salesforce connections if delivery problems persist.
Due to recent Salesforce OAuth/security changes, some customers may experience Salesforce Delivery/authentication failures.
Affected users may experience merge or delivery failures accompanied by errors such as:
“INVALID_SESSION_ID: Session expired or invalid”
“Could not refresh your Salesforce access token”
In some cases, re-authenticating the Salesforce connection temporarily restores functionality, though reports indicate the issue may recur.Our Engineering team is actively investigating. We will continue to provide updates as we learn more.
Components affected
Formstack API & Document GenerationTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
9 days ago - at 05/11/2026 07:15PM
This issue has been resolved.
Some customers may need to re-authenticate their Salesforce connection before Salesforce Delivery resumes successfully. If you continue to experience merge or delivery failures, please re-authenticate your Salesforce connection and retry the affected delivery.
We appreciate your patience while our team investigated this issue.
MONITORING
9 days ago - at 05/11/2026 05:14PM
We have implemented a fix and are currently monitoring the results.Some customers may still need to re-authenticate their Salesforce connection before Salesforce Delivery resumes successfully. If you continue to experience merge or delivery failures, please re-authenticate your Salesforce connection and retry the affected delivery.
We will continue monitoring the situation and provide additional updates as needed.
IDENTIFIED
9 days ago - at 05/11/2026 04:50PM
The issue has been identified and a fix is being implemented.
INVESTIGATING
9 days ago - at 05/11/2026 04:21PM
Due to recent Salesforce OAuth/security changes, some customers may experience Salesforce Delivery/authentication failures.
Affected users may experience merge or delivery failures accompanied by errors such as:
“INVALID_SESSION_ID: Session expired or invalid”
“Could not refresh your Salesforce access token”
In some cases, re-authenticating the Salesforce connection temporarily restores functionality, though reports indicate the issue may recur.Our Engineering team is actively investigating. We will continue to provide updates as we learn more.
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