Microsoft is ending the Internet Explorer 11 (IE11) desktop application in June 2022.
As a result, the support for IE11 for Forge Viewer will be deprecated by the end of January 2022. Note: some of Autodesk products that use Forge Viewer already stopped supporting IE 11.
If you have any questions and concerned about this, please contact forge.help@autodesk.com
For Microsoft’s announcement, please refer to this site.