pix_url usage. Search for usages of pix_url in the Moodle code base. (e.g. " git grep pix_url "). Confirm that it is not being used anywhere in Moodle. OneDrive repository Prepare your Moodle for OneDrive set up. Make sure that it is running on https. Note: If you have a dev machine that is on http and don't want to configure your environment to run on https, ngrok might be an easier way to let your test server run on https. To configure: Download ngrok. Run ngrok – " ./ngrok http 80 --region=au --bind-tls=true " In your config.php, set " $CFG->wwroot = 'https://[NGROK_URL]/path/to/moodle'; " In your config.php, add " $CFG->sslproxy = true; " Set up and enable the OneDrive repository. Check out https://docs.moodle.org/dev/OAuth2_Services . https://docs.moodle.org/32/en/OneDrive_repository might also be helpful. Login as a student. On the navigation panel, click on " Private files " Open the File picker and select " Microsoft OneDrive " and login to your OneDrive account. After a successful login, check the folder icons. Confirm that the folder icons are being properly rendered. (The file icons might look very small, but don't mind them. It's a separate issue)