Use my Web.config for your Patchfiles
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<security>
<requestFiltering allowDoubleEscaping="true">
<fileExtensions allowUnlisted="true">
<add fileExtension=".*" allowed="true" />
<add fileExtension="." allowed="true" />
</fileExtensions>
</requestFiltering>
</security>
<staticContent>
<mimeMap fileExtension=".*" mimeType="application/octet-stream" />
<mimeMap fileExtension="." mimeType="application/octet-stream" />
<mimeMap fileExtension=".datei" mimeType="application/octet-stream" />
</staticContent>
<directoryBrowse enabled="true" showFlags="Date, Time, Size, Extension, LongDate" />
<handlers>
<remove name="StaticFile" />
<add name="StaticFile" path="*" verb="*" modules="StaticFileModule,DefaultDocumentModule,Di rectoryListingModule" resourceType="Either" requireAccess="Script" />
</handlers>
<urlCompression doStaticCompression="true" />
</system.webServer>
<system.web>
<httpRuntime requestPathInvalidCharacters="" />
<pages validateRequest="false" />
</system.web>
</configuration>
<configuration>
<system.webServer>
<security>
<requestFiltering allowDoubleEscaping="true">
<fileExtensions allowUnlisted="true">
<add fileExtension=".*" allowed="true" />
<add fileExtension="." allowed="true" />
</fileExtensions>
</requestFiltering>
</security>
<staticContent>
<mimeMap fileExtension=".*" mimeType="application/octet-stream" />
<mimeMap fileExtension="." mimeType="application/octet-stream" />
<mimeMap fileExtension=".datei" mimeType="application/octet-stream" />
</staticContent>
<directoryBrowse enabled="true" showFlags="Date, Time, Size, Extension, LongDate" />
<handlers>
<remove name="StaticFile" />
<add name="StaticFile" path="*" verb="*" modules="StaticFileModule,DefaultDocumentModule,Di rectoryListingModule" resourceType="Either" requireAccess="Script" />
</handlers>
<urlCompression doStaticCompression="true" />
</system.webServer>
<system.web>
<httpRuntime requestPathInvalidCharacters="" />
<pages validateRequest="false" />
</system.web>
</configuration>