@Manika  The single-user-provider used by NiFi out of the box does not support multiple users.  It simply sets up a single user to access the secured NiFi suing the out of the box NiFi setup.  Only the very first time NiFi is launched with this setup will the generated username and password be output in the nifi-app.log.  You can use the following command to change that username and password: $ ./bin/nifi.sh set-single-user-credentials <username> <password> This single user username and password has full access to everything, so NiFi does not expose "policies" as setting up additional users is not possible.   NiFi provides no other provider for local users.  NiFi historically has left user management as an external dependency.  In order tp support multiple users with and various level of authorization, you will need to switch to using a different authorizer and authentication method. Switching to another authentication method will require you establish an external means for user authentication.  NiFi has numerous supported methods (User certificate, LDAP, Kerberos, etc.) https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#user_authentication Once you have selected the method you will use to authenticate your users that is not the "single-user-provider", you need to change your authorizer from "single-user-authorizer" to "standard-managed-authorizer": https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#standardmanagedauthorizer   If you found that any of the provided solution(s) assisted you with your query, please take a moment to login and click Accept as Solution below each response that helped. Thank you, Matt ... View more