Microsoft Edge is the default web browser on Windows 10, replacing Internet Explorer 11. It is a cross-platform / Chromium-based web browser developed by Microsoft.
For DigiCert PKI Client based enrolments initiated from Microsoft Edge browser, users will land on a page where it would prompt to add the PKI Client Chrome Extension before being able to successfully use the pre-installed DigiCert PKI Client for certificate enrollments.
User has to download the DigiCert PKI Client chrome extension available at DigiCert Authentication Client Extension - Chrome Web Store (google.com), install it on Microsoft Edge Browser and re-try the enrolment by following the below steps:
Install & configure DigiCert PKI Client Chrome extension on Microsoft Edge browser: