Can't make ASP.NET Website cache static files - asp.net

Question

I am trying to make Asp.net website to cache static files to the browser client.
I followed these steps
My web config:
<configuration>
<!-- elements removed for readability -->
<location path="content">
<system.webServer>
<staticContent>
<clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="100:00:00" />
</staticContent>
</system.webServer>
</location>
</configuration>
However, requesting a js file from the Content folder does not cache the file:
What i am doing wrong? I really need to fix this problem.

Answer 1

Removing System.Web.StaticFileHandler configurations from web.config fixed the issue, but i don't know if this is the correct way to solve the problem:
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
<!-- Removing these rules makes the cache to work.
With them, it doesn't work
<add verb="GET" path="*.js" name="Static for js" type="System.Web.StaticFileHandler" />
<add verb="GET" path="*.css" name="Static for css" type="System.Web.StaticFileHandler" />
<add verb="GET" path="*.png" name="Static for png" type="System.Web.StaticFileHandler" />
<add verb="GET" path="*.jpg" name="Static for jpg" type="System.Web.StaticFileHandler" />
-->
</handlers>
<staticContent>
<clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="100:00:00" />
</staticContent>
</system.webServer>