Keycloak | Troubleshooting


Change Server Port

By default, executing (for Linux) / standalone.bat (for Windows) makes the server available at following urls:


If we need to run multiple instance of server at different ports, run the following command:

For Linux: -Djboss.socket.binding.port-offset=100

For Windows:

standalone.bat -Djboss.socket.binding.port-offset=100

The above commands will add the offset of 100 to the defaults ports available for Keycloak server.

For example, previously the ports where 8443 and 8000. Now the new ports become 8443 + 100 = 8543 and 8080 + 100 = 8180.


Location of Server Logfile



Client secret not provided in request

{"error":"unauthorized_client","error_description":"Client secret not provided in request"

Possible Solution

Change Access Type to public

Keycloak - Set Access Type to PUBLIC

Additional Readings

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