On all browsers - Safari and Edge may not work at all as per MDL-51688 . Only test the LDAP page and the course edit page on those browsers at first. If it works complete the testing on those browsers and we can close the other issue. If not, skip the rest of the testing and we'll address it in MDL-51688 . Log in to your moodle course as an admin In the browser, select to save your password Edit a course and follow the "Instructions" below Edit a quiz and follow the "Instructions" below Test each of the following pages using the "Instructions" below Site administration ► Plugins ► Authentication ► Manage authentication CAS LDAP Search admin settings for "password" Ensure that no password fields are automatically filled by the browser Instructions: Use firebug (or the chrome inspecter or the equivalent in the current browser) to view the "form data" and make sure your password wasn't passed Open the inspector Click the network tab Select the request at the top (you may need to scroll) Select the headers tab Scroll to "Form data"