Show Visualizers Error “could not load this custom viewer”

Question

When I try to inspect DataSet by standard DataSet visualizer I see this error \"could not load this custom viewer\". I wrote simple dataset visualizer, but

Answer 1

I had the same issue in VS2017, I tried a lot but nothing was worked and finally, I reset all the VS settings which I made and the error was gone.

https://blogs.msdn.microsoft.com/zainnab/2010/07/16/reset-all-your-development-settings/