I have exactly the same problem here with Moodle 3.0.3 on IIS.
"as soon as I click on 'Notifications' I get stuck at the same page."
I have exactly the same problem here with Moodle 3.0.3 on IIS.
"as soon as I click on 'Notifications' I get stuck at the same page."
Did anyone resolve this? I have the same issue! Stuck at the upgradesettings.php page. Any settings I apply throughout the site write to the config log tables etc but the changes don't happen on the site.
Any ideas?