How to disable registration for MediaWiki?
To disable the option for your MediaWiki visitors to register accounts at your MediaWiki website, add the following line in the LocalSettings.php file:
$wgGroupPermissions['*']['createaccount'] = false;You can find below detailed instructions on how to do this on your web hosting account using Site Tools:
1. Go to your Site Tools > Site;
2. Click on File Manager;
3. Click on public_html folder name;
4. Click on the LocalSettings.php file;
5. On top, you will see several management options for LocalSettings.php file. Click on Edit;
6. Look for a line that starts with $wgGroupPermissions. If there is no such line, add it yourself and if there already is such a line you should edit it to look this way:
$wgGroupPermissions['*']['createaccount'] = false;7. Save the edited LocalSettings.php file and the new users account creation will be disabled.
If you have problems disabling the MediaWiki registration yourself, ask your host for assistance.