1. In the following file
C:\Windows\System32\inetsrv\config\applicationHost.config
Ensure the following
<section name="requestFiltering" overrideModeDefault="Allow" />
2
This is the web.config file
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<handlers>
<clear />
<add
name="StaticFile"
path="*" verb="*"
modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule"
resourceType="Either"
requireAccess="Read" />
</handlers>
<staticContent>
<mimeMap fileExtension=".*" mimeType="application/octet-stream" />
</staticContent>
<security>
<requestFiltering>
<fileExtensions allowUnlisted="true">
<remove fileExtension=".config" />
<add fileExtension=".config" allowed="true" />
</fileExtensions>
</requestFiltering>
</security>
</system.webServer>
</configuration>