Image rotation is handled on the browser side as you can see at https://github.com/iceteagroup/wisej-extensions/blob/master/Wisej.Web.Ext.BingWallpaper/Platform/BingWallpaper.js
If you comment the following lines, no image are shown
line 93 this.__setNextImage();
line 218 me.__setNextImage();
Please try the application deployed on IIS 8.5 (on production server Win 2012) on a browser on your own computer.
What are the exact issues you find on your browser?
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