ID: 4612 Title: Auth works now with $apr1$ prefixed passwords Component: Multisite Level: 1 Class: Bug fix Version: 1.5.0i1 The default encryption algorithm of htpasswd stores passwords in MD5 format. If you take a look at the file it prefixes the password with $apr1$. This format was not handled by the Check_MK GUI. If you set the prefix to $1$ it worked. The GUI has been changed to be able to work with both formats. Passwords set with this command should now work out of the box: htpasswd -m $OMD_ROOT/etc/htpasswd [username]