On all browsers Log in to your moodle course as an admin In the browser, select to save your password Site administration ► Plugins ► Enrolments ► Manage enrol plugins Enable Guest access Create a course On that creation screen, or course edit screen, check that your username does not appear in the id field, and your password does not appear in the guest access password field Save the form 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" Verify that editing groups does not autofill enrolment keys. Verify that editing self-enrolment settings does not autofill enrolment keys. Search admin settings for "password" Ensure that no password fields are automatically filled and it has no additional space at the top of the form when compared with stable Go to quiz admin settings Ensure the password field is not automatically filled and it has no additional space at the top of the form when compared with stable Try logging in Ensure that your password is autofilled as expected On your database, run this sql: DELETE FROM mdl_config where name = 'smtppass' OR name = 'smtpuser' Go to Site administration > Notifications and click check for updates Make sure the username and password are not filled in automatically and it has no additional space at the top of the form, compared to stable