Qlik Talend Studio: Error tDataStewardshipTaskInput unable to connect to Talend Data Stewardship

Greg_Taffer — Wed, 13 May 2026 07:45:48 GMT

Qlik Talend Studio job fails connecting to the Data Stewardship Application in Qlik Talend Cloud with the error below:

tDataStewardshipTaskInput_1 Unable to connect to Talend Data Stewardship.
java.io.IOException: Unable to connect to Talend Data Stewardship.

Caused by: java.net.UnknownHostException: No such host is known (tds.eu.cloud.talend.com)

Resolution

To resolve this issue:

Intermittent UnknownHostException can be caused by regional service outages. Check the Talend Cloud Status page for any ongoing incidents.
Verify that you are targeting the correct URL for your account's data center.

Example: For the AWS EU region, the valid URL is https://tds.eu.cloud.talend.com

If your account is in a different region (US or Asia), replace eu with the correct code, such as us or ap.

See Talend Cloud Regions documentation to verify your specific data center's URLs.
Verify your network and proxy configuration:
- Check Proxy Settings: If you are behind a corporate firewall or proxy, Qlik Talend Studio or the Remote Engine may not be able to "see" the external URL.
  
  In Qlik Talend Studio, go to Window > Preferences > General > Network Connections and configure your proxy.
- Allowlist URLs: Ensure your network team has added *.cloud.talend.com to your organization's firewall allowlist. All required allowlist URLs can also be found in the Talend Cloud Regions documentation
If you have verified all the above, but are still seeing the issue, you may be seeing other network-related issues, such as with DNS.
- Test name resolution: Run a command-line test to see if your OS can resolve the host:
  
  Windows: nslookup tds.eu.cloud.talend.com
  Linux/Mac: dig tds.eu.cloud.talend.com or ping tds.eu.cloud.talend.com
- Flush DNS Cache: If the manual test fails, try flushing your DNS cache or restarting the application to clear any "bad" cached entries.

Cause

This error indicates that the Qlik Talend Studio job was unable to resolve the hostname to an IP address at that instant, in this case, Qlik Talend Cloud Data Stewardship.

Environment

Qlik Talend Studio
Qlik Talend Cloud

article Qlik Talend Studio: Error tDataStewardshipTaskInput unable to connect to Talend Data Stewardship in Official Support Articles

Qlik Talend Studio: Error tDataStewardshipTaskInput unable to connect to Talend Data Stewardship

Resolution

Cause

Environment