Gautier The only SSO extension available at FreeFlarum is maicol07-sso (NB that’s for SSO, I don’t know which kind of auth MediaWiki works with). But if you set the SSO extension up correctly, it’ll work - other forums were able to get it working, it’s just that if you misconfigure it and log out, it has a chance of bricking your auth system if it’s not set up properly. In that case, you can let me know and I’ll disable it, or you can create a second account in another browser just for testing and remain logged in as admin in the main browser window where you can adjust the config if it doesn’t work properly