@san_re The configuration of Remote Url in InvokeHTTP should be as follows:   /j_security_check?j_username=${j_username}&j_password=${j_password} Notice the credential values are passed to the url with the ?.  This is the only change in the processor config.   Here is a demo flow: GenerateFlowFile - starts flow for testing UpdateAttribute - sets user, pass,and mime type attributes needed in InvokeHttp InvokeHttp - sends POST   You can find this template on my GitHub to inspect the entire flow: https://github.com/steven-dfheinz/NiFi-Templates/blob/master/InvokeHttp_Demo.xml   ... View more