Original question https://issues.jboss.org/browse/KEYCLOAK-2029 Hi, I'm studing how integrate my applications whit keycloak whit minor impact. I'm using JBoss EAP 6.3.0, i instaled keycloak adapters like reference guide says in chapter 8 and keycloak 1.6.0. #1 I have a form html: <form class="form-signin" id="loginform" action="j_security_check" method="POST" > <label for="inputUsernamel" class="sr-only">Usu&aacute;rio</label> <input name="j_username" type="text" id="usuario" class="form-control" placeholder="Usuario" required autofocus > <label for="inputPassword" class="sr-only">Senha</label> <input name="j_password" type="password" id="senha" class="form-control" placeholder="Senha" required > <button class="btn btn-lg btn-primary btn-block" type="submit" id="btnLogin" >Acessar</button> </form> #2 In my web.xml i have <auth-method>KEYCLOAK</auth-method> #3 I have WEB-INF/keycloak.json like reference says. #4 my client is configured like image attached #5 When i send a user and pass in html form i have: We're sorry ... Invalid parameter: redirect_uri #6 the keycloak log sasy: 12:14:26,904 DEBUG [org.jboss.ejb.client.txn] (Periodic Recovery) Send recover request for transaction origin node identifier 1 to EJB receiver with node name cd7390sx006 12:14:33,270 DEBUG [org.jboss.resteasy.core.SynchronousDispatcher] (default task-24) PathInfo: /realms/laboratorio/protocol/openid-connect/auth 12:14:33,273 DEBUG [org.keycloak.protocol.oidc.utils.RedirectUtils] (default task-24) replacing relative valid redirect with: /sisduweb/ 12:14:33,273 WARN [org.keycloak.events] (default task-24) type=LOGIN_ERROR, realmId=laboratorio, clientId=sisdu, userId=null, ipAddress=10.208.20.97, error=invalid_redirect_uri, response_type=code, redirect_uri=http://10.208.20.97:8080/sisduweb/j_security_check* 12:14:33,274 DEBUG [freemarker.cache] (default task-24) TemplateLoader.findTemplateSource("template_pt_BR.ftl"): Not found 12:14:33,274 DEBUG [freemarker.cache] (default task-24) TemplateLoader.findTemplateSource("template_pt.ftl"): Not found 12:14:33,274 DEBUG [freemarker.cache] (default task-24) TemplateLoader.findTemplateSource("template.ftl"): Found 12:14:33,275 DEBUG [freemarker.cache] (default task-24) "template.ftl"("pt_BR", UTF-8, parsed): using cached since file:/opt/kc/keycloak-1.6.0.Final/standalone/configuration/themes/base/login/template.ftl<file:///\\opt\kc\keycloak-1.6.0.Final\standalone\configuration\themes\base\login\template.ftl> hasn't changed. 12:14:33,277 DEBUG [freemarker.cache] (default task-24) "template.ftl"("pt_BR", UTF-8, parsed) cached copy not yet stale; using cached. 12:14:33,280 DEBUG [freemarker.cache] (default task-24) "template.ftl"("pt_BR", UTF-8, parsed) cached copy not yet stale; using cached.