problem using a custom 404 page in IIS - iis

I have a web site with a child directory set up as an application. I set up the application to use a custom 404 page. When I navigate to the url and put in a non existent page I get the following error message. Any other asp page in the application works fine. There isn't even any script in the 404 page... just plain html so I'm not sure what is causing this. I've tried creating an application pool specifically for this application but that didn't help. Thanks.
Error message: The specified request cannot be executed from current Application Pool

Try to create a registry key with the name IgnoreAppPoolForCustomErrors (type DWORD, value 1) in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters\
See http://blogs.msdn.com/rakkimk/archive/2006/09/01/735684.aspx or http://www.yanghengfei.com/show-131-1.html for more information - seems to be a not so uncommon problem.

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Default Document not working on Azure Web App

I have a simple azure web app and have set the default document in the portal to home.aspx. There is a home.aspx file published, it is browsable via http://my-domain.azurewebsites.net/home.aspx (not real domain) however the default document won't work when browsing to http://my-domain.azurewebsites.net it returns a 404. There is nothing special here. I even added it to the web.confg and it still returns a 404. It is a web forms project, set to integrated security with the correct default document added. Any ideas?
I setup the following web app (West): supportforlucuma There is only one other app in that plan which is the one that isn't working.
I can see the home.html page by visit “http://supportforlucuma.azurewebsites.net/”, Is your issue solved? If no, I will provide more information of how to debug this issue.
Except to set default document on portal and web.config, the default document also could be set in RouteConfig.cs file. For example, following code will set the index.aspx as the default page of current web application and it has the highest priority. If index.aspx file is not exist, a 404 error will response to client. Please check whether the similar code is exist in RouteConfig.cs file.
routes.MapPageRoute("default", "{page}", "~/{page}.aspx",false,new RouteValueDictionary( new { page = "index" }));
For further troubleshooting this issue, we can to get the detail information of 404 response. For example, which modules are executed on server side during the default page is accessed. To do it, we need to enable Failed request tracing. Then we could see the detail information by download the tracing log from LogFiles folder. For example, "ftp://xx.ftp.azurewebsites.windows.net/LogFiles/W3SVC355162095/".

Http 403 error in Microsoft edge

I was getting "HTTP 403 error Microsoft Edge can’t get to this page", while launching an application from IIS in Windows 10. Please suggest a solution for this.
thanks
If all permissions are set and even though your website shows 403 forbidden, most likely the default page is not set for your website. With IIS, you can configure the default document as follows.
Connect to IIS.
Expand the sites and select the desired website.
From right hand side feature view, click on Default Document.
Set your desire default page and save the settings.
While you browse any website, IIS searches for the default page to be displayed. If the first default document is not available, IIS will look for the next default page from the list. When IIS is unable to find any match and directory listing is enabled for that particular website, IIS will show you the list of folders. If directory listing is disabled, IIS will return an HTTP Error 403 - Forbidden message to the browser.
If an empty application gives you a 403 I can think of two immediate reasons.
The permissions are wrong. You might need to give the application pool user (IIS AppPool\NAMEOFAPPPOOL with recommended configuration) read permission to the directory.
You don't have any content. If you try to access a directory in IIS you will get a 403. Add a file and try to access that directly, or a Default.aspx or index.html file to the directory you're trying to access.

where can i find the default 404 error page for windows sharepoint service 2.0

Where can i find the default htm file, mapped to show the 404 error in Sharepoint service 2.0. Currently whenever the request for a site hits the 404 error, it goes to the default page, but the point to note here is, which is not the one we set in IIS custom error option.
My requirement here is to make few modification in the 404 error page. I tried mapping the request to a custom error page with <customErros> tag in web.config. But unfortunately, its still showing the default 404 error page. When i checked the viewsource of the error page i can see some comments like, res://shdocvw.dll/http_404.htm#http://www.DocURL.com/bar.htm
Any idea about this? Thanks in advance
I haven't had to do this but this entry looks quite reasonable: http://blogs.msdn.com/b/jingmeili/archive/2007/04/08/how-to-create-your-own-custom-404-error-page-and-handle-redirect-in-sharepoint-2007-moss.aspx
Basically when you install WSS it hi-jacks IIS. You can still do most of the things you would expect but you need to go through the Central Administration pages and the XML files that control many aspects of SharePoint.

Make IIS7.5 use custom error page

I have a custom error page. It works on my production server, but not on my dev machine. It's Windows 7, IIS 7.5.
I cannot get it to actually execute my custom page, although I can get it to respect detailed-local vs custom always. It just doesn't actually hand over to my custom error page and instead gives me the generic "Runtime Error" page for the remote mode.
Facts that might be relevant: it's an application mounted under a different app pool and web.config, this one is .NET 4.0, Integrated.
I was able to get it working, once, with "Response.TrySkipIisCustomErrors = true;" - but it did a redirect instead of an execute so I lost the error context which of course is the whole point - and in trying to change the redirect mode I was unable to get it to work again.
I've tried using both customErrors and httpErrors in all the documented/standard ways, but no combination works. Again, I have had this working correctly elsewhere.
The above is a normal response - if your error page is itself generating an exception.
It turned out the same code causing the original error was in the execution of the error page.

IIS 404 Custom Error: URL return response code 200 instead

I'm trying to return a custom 404 page using IIS6. (I have a site that is mostly .shtml pages built using movable type). I have tried it 2 ways:
1) set the 404 error handler in IIS to be type "file" with the path \404.html. This works, but it also means that I can't import the header and footer of my site (hence the .shtml) Trying to point the 404 error handler to 404.shtml results in the default 404 page...i guess IIS can't process shtml files in the 404.
2) set the type to "URL". This works great, except that the response code is no longer 404! Its a 200.
How can I get IIS to respond with a 404 response code with the content of my 404.shtml file?
Given that it's IIS, adding
<% Response.Status = "404 Not Found" %>
to the top of 404.shtml should change the response code to 404.
I am not on a windows machine so I am unable to test it at the moment to verify.
Update:
I was finally able to run a few tests on a IIS 6. As you mentioned in a comment to my post, an .shtml file does not allow script commands to run. So there are at least two ways to work around this:
Instead of naming your custom 404 handling page 404.shtml, name it 404.asp. The user should never see the actual name of the page so it shouldn't cause any issues. Note that "Active Server Pages" must be set to 'Allowed' in the Web Service Extensions folder of IIS.
Modify the page extension mapping for .shtml to use asp.dll instead of ssinc.dll. You can do this from IIS by selecting the website and viewing Properties -> Home Directory tab -> Configuration -> Mappings tab. Note that this is far from an ideal solution because now all your .shtml files will be processed by asp.dll. This could cause your pages to render more slowly (assuming asp.dll processes files more slowly than ssinc.dll due to greater complexity) and violates the principle of least privilege.
If neither of the options fit your situation, then it may still be possible but the solution isn't immediately obvious to me.
In IIS Manager, open the Properties of your Web site (or virtual dir) and go to the Custom Errors tab. There you can set which file is sent in case of each error code, including 404.

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