SQlserver 2012 express: KB2716442: error 84B20001 OK - I backed up the databases, de-installed the instance - together with anything else that mentioned the SQlserver 2012 - re-booted, re-installed and restored the databases My database still works I then looked for the update and didn't find anything Ummm So I will close this as being resolved Many thanks for your help - it is much