How to get detailed error when getting 500 error message

When your website is not running properly in IE and got 500 error, you can follow these steps to show the detailed error message.

1. Open your IE-->TOOLS-->Internet option-->Advance-->uncheck"Show Friendly HTTP Error Message" and then submit.
After you unchecked it, if you still get this 500 error, you can follow the second step.

2. create a web.config file in your website root folder and put the script below in it, or you can put "<httpErrors errorMode="Detailed" />" between <system.webServer>and </system.webServer> in your existing web.config file.

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <httpErrors errorMode="Detailed" />
    </system.webServer>
</configuration>

3. Save the file, you can find the detailed error message of your site.