Hi everyone,
I am facing an issue with FME Flow 2026.2 where an OpenAPICaller transformer is unable to fetch data from an internal service due to Kerberos authentication failing.
Here are the details of our setup:
- .The Service: A "Data Virtualization" service hosted internally within our corporate network.
- The Environment: FME Flow is running locally/on-premise within the same corporate network (Local / Firmennetz).
- The Problem: The OpenAPICaller cannot authenticate via Kerberos, causing the data retrieval to fail.
Has anyone successfully configured the OpenAPICaller (or underlying HTTP/web connections in FME Flow) to work with Kerberos authentication in a local network environment?
Are there specific environment variables, or FME Flow service account permissions (e.g., SPN / Active Directory delegation) that we need to configure to make Kerberos pass-through work?
Any help or workarounds would be greatly appreciated!
Best regards,
Michael