Topic on Manual talk:Renameuser/Archive 3

when installing this extension on a Wiki (Mediawiki 1.23), I get the message "This version of the Renameuser extension requires MediaWiki 1.25+"

You are trying to install a version that is incompatible with MW 1.23. Either you update a wiki, e.g. to MW 1.27 (LTS) (preferred) or you should use a version compatible with MW 1.23.