The IIS Express applicationHost.config file contains invalid entries

Question

I am getting this error while creating a new web application project after a fresh install of VS2019.

Please see the details: The IIS Express applicationHost.config file contains invalid entries and must be corrected before you can open project xxxxx'

xxxx is for what it shows enter image description here at the end'

Answer 1

So I found a solution for my own problem as it escalated to crashing various MS apps like Visual Studio, SSMS, etc.. – that are calling the.Net framework; therefore, my last resort was the laptop needed a factory reset. Clean slate everything.