North2Doug

I encountered this too. The solution for me was: (always backup your site before trying any solution)

I renamed .htaccess file to .htaccess_old and then went to WP>Settings>Permalinks and click the SAVE button. A new .htaccess file was written however it was the default clean install version; no security settings.

I went to the iThemes security controls and tried re-saving. Nothing written to .htacess.

When I deactivated and deleted the plugin and then reinstalled it all of my settings were still in place and after saving – the .htacess file was updated with the iThemes settings.

The .htaccess_old file could then be deleted.

As always. Write down your settings and backup your site before trying any solution.

FYI to others

I found that the Change User ID 1 would not work on LocalHost however I have not tried this on a live server install as I already had Better WP Security in place and upgraded to 4.0.2.

I do notice, however, that the Admin User section is hidden on my live installs as I previously changed the user ID 1.