I resolved this by first copying standalone.xml from the previous (2.0.0) installation into the new installation, then running the migrate-json task. I also had to copy the .db files from the standalone/data directory of the old to the new. These are both steps not listed in https://keycloak.gitbooks.io/server-adminstration-guide/content/v/2.2/top... Should I file a bug about this? Did I actually do the right thing? Patrick Boe ________________________________ From: Patrick Boe Sent: Friday, September 30, 2016 2:55 PM To: keycloak-user(a)lists.jboss.org Subject: migrate-json operation produces WFLYCTL0212: Duplicate resource Hello, I'm not sure if I'm invoking this incorrectly, but I could use some help diagnosing an error I get when attempting to upgrade my Keycloak installation from 2.0.0 to 2.2.1. When, from the root of my new keycloak installation, I do: > .\bin\jboss-cli.bat [disconnected /] embed-server --server-config=standalone.xml [standalone@embedded /] /subsystem=keycloak-server:migrate-json I get the following error: { "outcome" => "failed", "failure-description" => "WFLYCTL0212: Duplicate resource [ (\"subsystem\" => \"keycloak-server\"), (\"theme\" => \"defaults\") ]", "rolled-back" => true } Does anyone have some advice on how to resolve this, or suggestions as to what I may have misconfigured? Best, Patrick Boe ________________________________ The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. _______________________________________________ keycloak-user mailing list keycloak-user(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/keycloak-user