How to Enable DRM in Different Browsers
For Google Chrome
Click on the menu button in your Chrome browser (three vertical dots) located at the top right corner of the Chrome window.
From the drop-down menu, hover over "Settings" and then click on "Privacy and Security".
Select "Site Settings", scroll down to the "Content Settings" section, and click on "Additional Content Settings".
Within the "Content Settings" page, locate and click on "Protected Content IDs".
Toggle the option next to "Sites can play protected content" and "Sites can use identifiers to play protected content" to blue.
For Opera
Type opera://settings in the address bar of your Opera browser and press Enter.
Click on "Privacy & security".
Scroll down to the "Site Settings" section and click on it.
Scroll down to the "Additional Content Settings" and go to the "Protected Content IDs"
Toggle the switches next to "Sites Can Play Protected Content" and "Sites Can Use Identifiers To Play Protected Content" to blue.
For Mozilla Firefox
Click on the menu button in your Firefox browser (three horizontal lines) located at the top right corner of the Firefox window.
From the drop-down menu, select "Preferences" (on macOS), "Settings" (on Windows), or "Options" (on Linux).
Click on the "General" tab located on the left sidebar.
Scroll down to the "Digital Rights Management (DRM) Content" section.
Check the box next to "Play DRM-Controlled Content". If you need to update or install the necessary DRM module, click on the "Check for Updates" button next to "Digital Rights Management (DRM) Content".
For Microsoft Edge
Click on the menu button in your Edge browser (three vertical dots) located at the top right corner of the Edge window.
From the drop-down menu, hover over "Settings" and then click on "Cookies and Site permissions".
Scroll down to the "Protected Content IDs" section and click on it.
Toggle the switch next to "Allow Sites to Play Protected Content (recommended)" and “Allow Sites to Play Protected Content (recommended)“ to blue.