I'm needing help with debugging error with Security Token Service on Sharepoint 2013
The SharePoint Health Analyzer
The Security Token Service is not available.
Event Error Output
An exception occurred when trying to issue security token:
The content type text/html; charset=utf-8 of the response message does not
match the content type of the binding (application/soap+msbin1).
If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were:
'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>IIS 8.5 Detailed Error - 500.19 - Internal Server Error</title>
<style type="text/css">
<!--
body{margin:0;font-size:.7em;font-family:Verdana,Arial,Helvetica,sans
serif;}
code{margin:0;color:#006600;font-size:1.1em;font-weight:bold;}
.config_source code{font-size:.8em;color:#000000;}
pre{margin:0;font-size:1.4em;word-wrap:break-word;}
ul,ol{margin:10px 0 10px 5px;}
ul.first,ol.first{margin-top:5px;}
fieldset{padding:0 15px 10px 15px;word-break:break-all;}
.summary-container fieldset{padding-bottom:5px;margin-top:4px;}
legend.no-expand-all{padding:2px 15px 4px 10px;margin:0 0 0 -12px;}
legend{color:#333333;;margin:4px 0 8px -12px;_margin-top:0px;
font-weight:bold;font-size:1em;}
a:link,a:visited{color:#007EFF;font-weight:bold;}
a:hover{text-decoration:none;}
h1{font-size:2.4em;margin:0;color:#FFF;}
h2{font-size:1.7em;margin:0'..
UPDATE
I tried the below suggestion to browse to the http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc I was then able to receive the following error I'm still trying to work through how to resolve this.
Any suggestion on how I should proceed will be appreciated nothing is jumping out to me when I inspect the web.config file.