Status code 302, showing server information

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my website hosted on windows server. when status code 302 occurs its showing server information like Server:- Microsoft-IIS/8.0 but not in 404 500. i have developed application in asp.net C#
suppose my url is http://164.100.158.189/SHRCtest/Secure/login.aspx
but if i typed
http://164.100.158.189/SHRCtest/Secure/logi then 302 response come with server information

how to solve it.

What I have tried:

i have tried in

void Application_PreSendRequestHeaders(object sender, EventArgs e)
   {
       Response.Headers.Remove("Server");
       Response.Headers.Remove("X-AspNet-Version");

   }

<httpProtocol>
         <customHeaders>
             <add name="X-Frame-Options" value="SAMEORIGIN" />
             <add name="X-XSS-Protection" value="1; mode=block" />
             <add name="X-Content-Type-Options" value="nosniff" />
             <add name="Strict-Transport-Security" value="max-age=31536000; includeSubDomains" />
             <remove name="X-Powered-By" />


         </customHeaders>
     </httpProtocol>

<httpErrors>
           <remove statusCode="404" subStatusCode="-1" />
           <error statusCode="404" prefixLanguageFilePath="" path="http://localhost/eaudit/error.aspx" responseMode="Redirect" />
       </httpErrors>