We have been supporting Lean Library extension on Internet Explorer. Following Microsoft's announcement that they will be retiring the Internet Explorer browser in 2022, we will be making some adjustments to work along with this change.
If you are currently a user of Internet Explorer, the extension will not be updated to the latest version which is currently available on others browsers, such as Microsoft Edge, Firefox, Opera, Safari, or Google Chrome, as Internet Explorer is not compatible with some of our latest updates.
If you would like to use the latest features from our extension, we would recommend using the extension on Microsoft Edge. Please click here to find the direct download link to the Lean Library extension for Microsoft Edge