The only way to test this is by doing some code changes to point to existing sites that have some certificate issues (reported to us via our support system) Please, check the restricted comment to see the list of sites and expected errors for when testing. As a site admin, open this page: Master: admin/settings.php?section=optionalsubsystems 311: admin/settings.php?section=mobilesettings Make sure " Enable web services for mobile devices " is ticked Once that page is opened, apply this code change: File admin/tool/mobile/classes/api.php Function get_potential_config_issues() Before the if (is_https()) { check, add a new line changing the wwwroot: $CFG->wwwroot = "URL_SITE_TO_TEST"; where URL_SITE_TO_TEST is each of the sites to be tetsted Reload the page indicated in point 1 and check that: Confirm that you see the expected error for the site right below the "Enable web services for mobile devices " section Note: Ignore the following warnings if they're shown: Display debug messages (debugdisplay) is enabled. It should be disabled. Mobile notifications are not enabled. They should be enabled in Notification settings.