asp.net - Blank custom 404 page after deploying to IIS 7.5 -
incorrect urls http://localhost:54321/foo/bar , errors httpnotfound() handled in localhost without problems. after deploying iis 7.5, return blank page on both of above scenarios. i've seen else had problem here(it comment moulde several upvotes). code:
web.config
<system.web> <customerrors mode="off" redirectmode="responseredirect"> <error statuscode="404" redirect="~/error/notfound"/> </customerrors> </system.web> <httperrors errormode="custom" existingresponse="replace"> <remove statuscode="404" /> <error statuscode="404" responsemode="executeurl" path="/error/notfound"/> <remove statuscode="500" /> <error statuscode="500" responsemode="executeurl" path="/error/error"/> </httperrors> errorcontroller
public class errorcontroller : controller { public actionresult notfound() { response.statuscode = 404; response.tryskipiiscustomerrors = true; return view(); } } routeconfig
routes.maproute( "error - 404", "notfound", new { controller = "error", action = "notfound" } ); routes.maproute( "error - 500", "error", new { controller = "error", action = "error" } ); routes.maproute( name: "default", url: "{controller}/{action}/{id}", defaults: new { controller = "home", action = "index", id = urlparameter.optional } ); notfound
<h2>404 not found</h2> <div class="alert alert-info"> <p><strong>whoops...</strong></p> <p>the resource looking doesn't exist</p> </div> the server runs windows server 2008 r2. when go .../foo/bar or action returns httpnotfound(), returns blank page. idea?
home/test
public class homecontroller: controller{ // ... public actionresult test(){ return httpnotfound(); } } update: when go /error/notfound on server, returns blank page 404. response fiddler:
http/1.1 404 not found cache-control: private content-type: text/html; charset=utf-8 server: microsoft-iis/7.5 x-aspnetmvc-version: 5.2 x-aspnet-version: 4.0.30319 x-sourcefiles: =?utf-8?b? qzpccwhlxfbyb2ply3rzxfzlbmrvclbvcnrhbfxwzw5kb3jqb3j0ywxcrxjyb3jctm90rm91bmq=?= x-powered-by: asp.net date: thu, 23 apr 2015 13:24:49 gmt content-length: 5434 update 2: if take existingresponse="replace" away, can open error/notfound on server. still got blank page on myserver/myproject/foo/bar
in case reason in iis - web settings - request filtering - sql injection filter...
if url or query string contains ;, response ends status 404.19 - denied filtering rule. blank page displayed. iis redirect custom error http://server.com/error404.aspx?404;http://server.com/missingurl , char ; why request filter end request because of sql injection.