I have some issues with using nforum. Please see screenshots bellow
I don't know why I receive this error only on this part and everything else on forum works great?
If you change in the file "web.config"
<customErrors mode="RemoteOnly" />
to
<customErrors mode="Off" />
you'll get more information what the real error is...
Related
I have an MVC 5 app and with custom errors defined in web.config:
<customErrors mode="RemoteOnly" redirectMode="ResponseRedirect" defaultRedirect="~/Errors/GeneralError">
<error statusCode="404" redirect="~/Errors/NotFound" />
<error statusCode="500" redirect="~/Errors/ServerError" />
</customErrors>
if I type a none existing url it will handle it just fine as long as it is 3 levels/folders maximum. I also have Elmah installed and it will log the error. On the other hand, if I try accessing a none existing url with 4 or more levels/folders, the error will not be handled. It won't redirect to the custom error page, or the default error page. Instead, it will return a blank page with a 404 header. meaning:
website.com/blahblah
website.com/a/blahblah
website.com/a/b/blahblah
will be handled, but website.com/a/b/c/blahblah and above won't. Additionally, I have some pages with 4 or more folders, and they work fine. This problem occurs on local production computer and on the published site on Azure. Anyone has an insight of why?
Solution
Thanks to #Nicholas Patton's link I made these chages:
(1) I removed customErrors completely
(2) added this to web.config:
<system.webServer>
<httpErrors errorMode="Custom" existingResponse="Replace">
<remove statusCode="404"/>
<error statusCode="404" path="/Errors/NotFound" responseMode="ExecuteURL" />
<remove statusCode="403"/>
<error statusCode="403" path="/Errors/NotFound" responseMode="ExecuteURL" />
<remove statusCode="500"/>
<error statusCode="500" path="/Errors/ServerError" responseMode="ExecuteURL" />
</httpErrors>
(3) In contrary to the article's suggestion using .aspx files I used regular actions in MVC. For example, in controller Error I used NotFound action like so:
[Route("Errors/NotFound")]
public ActionResult NotFound()
{
Response.StatusCode = 404;
return View("Error404");
}
There are a few differences now. the 404 page will not be redirect to Error/NotFound?aspxerrorpath=/errorURL/a/b/c it will simply show the custom error page in the original link without redirection. If you still want the aspxerrorpath value you can simply get the URL in the action like this:
[Route("Errors/NotFound")]
public ActionResult NotFound()
{
string aspxerrorpath = Request.RawUrl;
// do whatever with aspxerrorpath
Response.StatusCode = 404;
return View("Error404");
}
Nonetheless, Elmah still doesn't log 404 errors above 3 folders. But this is a different issue for a new question.
Read this:
https://dusted.codes/demystifying-aspnet-mvc-5-error-pages-and-error-logging
From the link above:
...what if someone navigates to a URL which isn't handled by ASP.NET?
For example try navigating to http://{your-website}/a/b/c/d/e/f/g. The
route is not mapped to ASP.NET and therefore the Application_Error
event will not be raised.
This is a really great tutorial if you really want your custom error pages to be beefy. :)
I have MVC 4 web based system. I need to handle error page in web.config file. I m try do with httpError syntax. When 404 it will show blank page. not show the actual error page. url also not show as error page.
web.config code:
<httpErrors errorMode="Custom" existingResponse="Replace">
<remove statusCode="404" />
<error statusCode="404" responseMode="ExecuteURL" path="~/Error/PageNotFound.htm" />
</httpErrors>
please help this.
Try looking at this page: Error Handling and Nice Error pages.
It says to add the following in the Web.Config:
<customErrors mode="On" defaultRedirect="~/Content/Errors/page500.aspx" redirectMode="ResponseRewrite">
<error statusCode="404" redirect="~/Content/Errors/page404.aspx" />
</customErrors>
I haven't got my MVC code infront of me but I think this is what I did.
I have some custom error messages I want to display to the user. So when they say enter a bad username/password combo I might do this in my code:
Response.StatusCode = 400;
return Json("Invalid username or password");
This works fine on my local machine. I've been deploying to a web host and these messages are being overwritten by the server so that they all come out as:
The page cannot be displayed because an internal server error has
occurred.
The server is obviously trying to protect me from revealing sensitive information about what went wrong but I actually do want this error to go through and be seen by the user (well really, parsed by my code and then displayed).
I assume there's something in web.config I can do to make this work but everything I've tried thus far hasn't work. Any ideas?
Relevant section of web.config as I have it now:
<system.webServer>
<httpErrors errorMode="Custom" existingResponse="PassThrough">
</httpErrors>
<validation validateIntegratedModeConfiguration="false"/>
<modules runAllManagedModulesForAllRequests="true"/>
etc.
By the default, some HTTP status codes are obscured by IIS and replaced by it. However, it can be configured by using this line:
<system.webServer>
<httpErrors errorMode="Detailed"/>
This will allow you to pass your custom message in a response and to read it on the client side when AJAX call is done.
In order to handle each Http error code you need to add the specific mapping on the web.config file
<customErrors mode="On/RemoteOnly" >
<error statusCode="400" redirect="My400View" />
<error statusCode="404" redirect="My404iew" />
<error statusCode="500" redirect="My500View" />
</customErrors>
The solution to this ended up being removing the < httpErrors > element from web.config entirely. Even setting it to its default options as seen here http://www.iis.net/configreference/system.webserver/httperrors didn't work so I'm a bit perplexed why removing it works.
<system.webServer>
**Remove <httpErrors> !**
<validation validateIntegratedModeConfiguration="false"/>
<modules runAllManagedModulesForAllRequests="true"/>
I have an error page located at Errors/Error in my ErrorsController. If I create an error it redirects me to that page fine. However I get a error email from Elmah stating the message below. Is there a reason why I am getting this message even thought my error page displayed fine?
System.InvalidOperationException: The view 'Error' or its master was not found or no view engine supports the searched locations. The following locations were searched: ~/Views/divisions/Error.cshtml ~/Views/divisions/Error.vbhtml ~/Views/Shared/Error.cshtml ~/Views/Shared/Error.vbhtml
Web.Config
<customErrors mode="Off" defaultRedirect="~/Error">
<error statusCode="404" redirect="~/PageNotFound" />
</customErrors>
I'm using MVC2.
My webconfig says
<customErrors mode="On" redirectMode="ResponseRewrite" defaultRedirect="~/internal-server-error">
<error statusCode="500" redirect="~/internal-server-error" />
<error statusCode="404" redirect="~/not-found" />
</customErrors>
My test method says
public ActionResult ErrorTest()
{
var z = 0;
var x= 3/z;
return null;
}
I still get the default Runtime Error Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed., instead of my custom error method, which is not even called.
Why? Is this a dev server issue? Will it work on IIS?
EDIT: Tried it on IIS Express as well, commented out the whole Application_Error in Global.asax.cs, still not working.
Try removing redirectMode="ResponseRewrite" attribute
CustomErrors does not work when setting redirectMode="ResponseRewrite"