Extension Warehouse not working (SU2016)

[DaveR]

The Extension Warehouse and 3D Warehouse no longer support SketchUp 2016 or earlier. See this thread:

If you're using Sketchup 2016 or earlier on Microsoft Windows, this message is for you

Hello Extension Warehouse users, Extension Warehouse is no longer compatible with Microsoft Internet Explorer. While we do our best to maintain backward-compatibility, many new web technologies simply can’t run in older internet browsers. How does this affect me? You will no longer be able to access all features of Extension Warehouse using the web dialog in SketchUp 2016 and earlier. The built-in dialog uses an embedded version of Internet Explorer even when you have Chrome, Firefox or Edge…

You can download the extension through your Internet browser and then install it using Window>Preferences>Extensions>Install Extension.