Presumably Firefox will discover that at your next startup, but possibly you would also need to create some settings. Select and copy the folder name: '''1.'''įinally you can drop the contents of the ZIP archive here. Right-click a blank area of the list > New > Folder, then paste the folder name and click away. Select and copy the folder name: '''gmp-widevinecdm''' This should launch a new window listing various files and folders in Windows Explorer. In the first table on the page, on the Profile Folder row, click the 'Open Folder' button. * type or paste about:support in the address bar and press Enter * (menu bar) Help > Troubleshooting Information * '3-bar' menu button > '?' Help > Troubleshooting Information Open your current Firefox settings (AKA Firefox profile) folder using either That archive doesn't set up the folder structure that I see, I think you will need to create it by hand. I think you would download the 64-bit Windows link: I think these are the links for the August 2017 release: