ADF Pipeline Error:
ADF Pipeline Error 2343

What does this error mean?

Connection to the HDInsight cluster failed because the username or password on the linked service is empty or null.

Common causes

• 1Username field is empty on the HDInsight linked service
• 2Password field is empty, null, or references an unresolved Key Vault secret
• 3Credentials were cleared after a linked service edit or redeploy via ARM/Bicep
• 4Key Vault secret used for the HDI password was deleted, disabled, or expired

How to fix it

1. 1Open the HDInsight linked service in ADF Studio (Manage > Linked services) and inspect the Username and Password fields.
2. 2Provide the correct credentials to connect to HDI — fill in a valid cluster username and password (or fix the Key Vault secret reference).
3. 3Test the connection on the linked service and confirm it returns success before saving.
4. 4Publish the linked service change and retry the failed pipeline run from ADF Monitor.

Frequently asked questions

Other configuration errors