I was building a new server to use while creating my IIS labs here, and got this error shown in Figure 1.
Figure 1, 500.19 Internal Server Error
These errors can be caused by numerous things, but in this case it was because I did not have ASP.NET installed
And as you can see, in Figure 2, when I look at the IIS Management console there are no ASP.NET features installed.
Figure 2, ASP.NET features not see in the IIS Management console
Install the ASP.NET binaries as described in some detail here and it will resolve the issue discussed in this article.