How can I force IIS and ASP.NET WebForms to go to our custom error page for an undefined routing?
I've reviewed the question asp-net-not-displaying-a-custom-404-page-as-configured.
We are using IIS 7.5
ASP.NET 4.0
Web Forms
If we have a request for http://www.oursite.com/searches, and we don't have "searches" defined in our routing map. We're getting a blank page back from the request with a 404 Status. We have:
Default 404 page at the server level
Default 404 page at the website level
Default error page defined in the web.config file
In our code, if throw an HTTPException of 404 we end up on our custom 404 page. If we request an ASPX page that doesn't exist we get our custom error page. If I add a default "catchall" routing for our site at the end of the routes, our cart process stops working.
When you search like - http://www.oursite.com/searches and it returns a blank page back from the request with a 404 Status. Its an http protocol error returning from IIS/Web Server. Your web config settings for custom error page will work only for .net framework exception. Configure your IIS to go to your custom error page that returns a 404 error.
Related
On our websites as someone visits a non-existing page, we dinamically create a 404 error page that returns a status code 404.
It works perfectly on localhost, but on the server the same page returns the standard 404 IIS (7.0) error
(IISError) instead of the custom one CustomError.
We can't edit the web.config file because we don't have a physical page to redirect to.
Is it possible that there is a IIS configuration that prevents our custom error page from showing?
There is a configuration setting in IIS. Click your application in IIS, and find Error pages settings.
For the error code, you could specify location of your custom page.
I configured the 404 error to redirect(302) client to a page instead of returning 404 error.
It is working, but I found once the reqest URL contains '%20' in URL, then the redirect will not function. IIS will return 404 to client.
I've also tried adding the same redirect setting into the ".NET Error Page" with no luck. Still failed and showed the 404 page.
Anyone has solution?
Win2012R2, IIS8.5, Microsoft .NET Framework :4.0.30319; ASP.NET :4.0.30319.34209, MVC4
I'm trying to set up custom 404 errors on IIS which needs to go to an ASPX page (404.aspx). If I browse the site and go to a nonexistant .aspx page (eg /not-here.aspx, the custom 404 page is used as expected. However if I go to an extensionless URL like /not-here then I just get IIS's own default 404 page served by the static content handler, rather than 404.aspx though ASP.NET
IIS (8.5) is set to "Execute a URL on this site" which is set to /404.aspx
How can I make IIS use the 404.aspx for all 404 errors? This works on our ancient IIS6 server but I can't get it to work on IIS 8.5
In the Error Pages feature, click on Edit Feature Settings. Make sure you have Custom error pages selected as the Error Responses.
I have a custom error page that should display for HTTP 404 errors. It does not and I am having difficulty figuring out why.
My web.config is set
<customErrors mode="On" />
Fiddler shows a 401.2, followed by a 404 for a single POST. Both errors should be custom. The 401.2 is working because I see it in fiddler. The 404 happens immediately after so all I see in the browser is the generic 404 error. I should see my custom 404 page.
Why won't my custom HTTP 404 page showup?
What's the URL you are testing with? If it's not a file type handled by ASP.NET (e.g. /foo/bar.txt) then you won't see the ASP.NET defined 404 handler.
-Oisin
If you're looking for what the 404.x codes mean here's this
HTTP 404.x-File or Directory Not Found
None - File or directory not found.
1 - Web site not accessible on the requested port.
2 - Web service extension lockdown policy prevents this request.
3 - MIME map policy prevents this request.
Seems to be an IIS specific code, not sure if IIS sends these details with the response
I have configured an ASP.NET application as follows:
<customErrors mode="RemoteOnly" defaultRedirect="~/Error.aspx"/>
When I browse to the ~/Error.aspx file the server returns 200 and the page is rendered. But if the user is redirected to the error page a querystring is appended to the path:
/Error.aspx?aspxerrorpath=/Test.aspx
But whenever this querystring is used the server doesn't render the error page, instead it returns a 404 using the server's custom error page, not Error.aspx
Why doesn't the web.config setting result in ~/Error.aspx being rendered?
I believe I've tracked down the problem. Due to a recent ASP.NET security vulnerability (see Scott Guthrie's post), one of the recommended actions was to put in a URLScan rule that prohibits any urls with a querystring with "aspxerrorpath=" in it. So your url is cut off before it even gets to ASP.NET and a default 404 is returned.
To check if this is your problem, you can "aspxerrorpath=xx" to ANY page url on your site, and it should return a 404 error.
Now that a patch has been released to fix this vulnerability in asp.net, you should be able to get rid of that rule and then your error page redirects should work again.