... If you started using TWiki on Basic Authentication and want to change, you have to switch back forms for future use, and manually correct the existing entries, by editing TWikiUsers , adding the Login Username for each member - PeterThoeny - pthoeny - 01 Jan 1999 - and also in the .htpasswd file, where you can either replace the WikiNames or duplicate the entries and have both, so both usernames will work. verification and clearer rewrite to follow in a bit. also link to original installation...