# OPC Browser not show up in Designer- ChooseDiscoveryServerStep **URL:** \ **Category:** Ignition\ **Created:** [September 5, 2023, 6:31pm UTC](https://forum.inductiveautomation.com/t/opc-browser-not-show-up-in-designer-choosediscoveryserverstep/78780 "2023-09-05T18:31:23Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mbai1](https://avatars.discourse-cdn.com/v4/letter/m/9fc29f/32.png) [@mbai1](https://forum.inductiveautomation.com/u/mbai1)\ **Post date:** [September 5, 2023, 6:31pm UTC](https://forum.inductiveautomation.com/t/opc-browser-not-show-up-in-designer-choosediscoveryserverstep/78780/1 "2023-09-05T18:31:23Z")
Hello I have an issue that I can see the OPC connection are connected, but in Designer OPC browser, nothing is shwon up. I checked the log, got following error, please help: **ChooseDiscoveryServerStep** ```auto java.util.concurrent.ExecutionException: UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: /0.0.0.0:8013 at java.base/java.util.concurrent.CompletableFuture.reportGet(Unknown Source) at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source) at com.inductiveautomation.ignition.gateway.opcua.client.connection.web.discovery.wizardsteps.ChooseDiscoveryServerStep.getEndpoints(ChooseDiscoveryServerStep.java:116) at com.inductiveautomation.ignition.gateway.opcua.client.connection.web.discovery.wizardsteps.ChooseDiscoveryServerStep.next(ChooseDiscoveryServerStep.java:103) at org.apache.wicket.extensions.wizard.dynamic.DynamicWizardModel.next(DynamicWizardModel.java:126) at com.inductiveautomation.ignition.gateway.opcua.client.connection.web.discovery.EndpointWizardButtonBar$NextButton.onClick(EndpointWizardButtonBar.java:26) at org.apache.wicket.extensions.wizard.WizardButton.onSubmit(WizardButton.java:88) at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1304) at org.apache.wicket.markup.html.form.Form.process(Form.java:967) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:789) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:701) at jdk.internal.reflect.GeneratedMethodAccessor43.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:258) at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:216) at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:243) at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:236) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:890) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289) at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259) at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:210) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1570) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1543) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at com.inductiveautomation.catapult.handlers.RemoteHostNameLookupHandler.handle(RemoteHostNameLookupHandler.java:121) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:301) at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) ``` ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [September 5, 2023, 9:07pm UTC](https://forum.inductiveautomation.com/t/opc-browser-not-show-up-in-designer-choosediscoveryserverstep/78780/2 "2023-09-05T21:07:37Z")
> [@mbai1](#): > > `Connection refused: /0.0.0.0:8013` That's not a valid target address. That **is** a valid **listen** address, but when connecting to a target you need a routable address, not `0.0.0.0`. ---
**Author:** ![mbai1](https://avatars.discourse-cdn.com/v4/letter/m/9fc29f/32.png) [@mbai1](https://forum.inductiveautomation.com/u/mbai1)\ **Post date:** [September 6, 2023, 2:58am UTC](https://forum.inductiveautomation.com/t/opc-browser-not-show-up-in-designer-choosediscoveryserverstep/78780/3 "2023-09-06T02:58:16Z")
Is there any sugesstion on how I can fix this? I check the OPC Quick Client in gateway and I can see everything, just not the Designer. Thanks ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [September 6, 2023, 11:43am UTC](https://forum.inductiveautomation.com/t/opc-browser-not-show-up-in-designer-choosediscoveryserverstep/78780/4 "2023-09-06T11:43:35Z")
How did you get a connection pointing at `0.0.0.0` ? Fix the target address for the OPC connection.