Not able to start Talend Data Prep


You are not able to start Talend Data Prep and received the error:

Caused by: com.mongodb.MongoCommandException: Command failed with error 18: 'Authentication failed.' on server localhost:27017



This can be a result of two issues:

  1. The MongoDB service is not started.
  2. Data Prep was not installed properly, and you need to reinstall it, specifying the MongoDB hostname and/or IP address.



Try these solutions:

  1. Verify the MongoDB service is running on your system. If it isn't running, start it.
  2. If it is running but you still get the error, reinstall Data Prep and specify the hostname or IP address of the MongoDB instance.
Version history
Revision #:
5 of 5
Last update:
‎09-28-2018 11:58 PM
Updated by: