<system.webServer>
<!--<handlers>
<add name="SimpleHandlerFactory-Integrated" path="*.ashx" verb="GET,HEAD,POST,DEBUG,PUT" type="System.Web.UI.SimpleHandlerFactory" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode" />
</handlers>
<modules>
<remove name="WebDAVModule" />
</modules>-->
<modules runAllManagedModulesForAllRequests="true">
<!--IISFIX: Whatever this is, it causes 405 Method Not Allowed errors on IIS when using PUT. (Microsoft's broken by defult)-->
<remove name="WebDAVModule"/>
</modules>
<handlers>
<!--IISFIX: ASP.net is broken by default. By default they will not accept verbs from the client.
First we have to rip out everything related to ASP.net-->
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit"/>
<remove name="ExtensionlessUrlHandler-Integrated-4.0"/>
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit"/>
<remove name="SimpleHandlerFactory-ISAPI-2.0-64"/>
<remove name="SimpleHandlerFactory-ISAPI-2.0"/>
<remove name="SimpleHandlerFactory-Integrated"/>
<remove name="SimpleHandlerFactory-Integrated-4.0"/>
<remove name="SimpleHandlerFactory-ISAPI-4.0_64bit"/>
<remove name="SimpleHandlerFactory-ISAPI-4.0_32bit"/>
<!-- IISFIX: Now that we're ripped out everything related to ASP.net, put them back correctly.-->
<add name="SimpleHandlerFactory-ISAPI-4.0_32bit" path="*.ashx" verb="*" modules="IsapiModule" scriptProcessor="C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0"/>
<add name="SimpleHandlerFactory-ISAPI-4.0_64bit" path="*.ashx" verb="*" modules="IsapiModule" scriptProcessor="C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0"/>
<add name="SimpleHandlerFactory-Integrated-4.0" path="*.ashx" verb="*" type="System.Web.UI.SimpleHandlerFactory" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode,runtimeVersionv4.0"/>
<add name="SimpleHandlerFactory-Integrated" path="*.ashx" verb="*" type="System.Web.UI.SimpleHandlerFactory" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode"/>
<add name="SimpleHandlerFactory-ISAPI-2.0" path="*.ashx" verb="*" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv2.0,bitness32" responseBufferLimit="0"/>
<add name="SimpleHandlerFactory-ISAPI-2.0-64" path="*.ashx" verb="*" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v2.0.50727\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv2.0,bitness64" responseBufferLimit="0"/>
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="*" modules="IsapiModule" scriptProcessor="C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0"/>
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode,runtimeVersionv4.0"/>
<add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="*" modules="IsapiModule" scriptProcessor="C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0"/>
<!--IISFIX: WebDAV is also buggy, and interferes with client requests-->
<remove name="WebDAV"/>
</handlers>
</system.webServer>
参考链接：
MLGB找了很久。操蛋。。。。