web.config missing when creating ASP.NET Core Web App in VS 2017 RC?

Question

I've noted that when creating a new ASP.NET Core Web App in Visual Studio 2017 RC, a web.config file is not created. My understanding was that this file contains important code to facilitate IIS integration, something that I am interested in, as I would like to run this application on IIS.

Is this a bug, or have I missed a step in the process?

score 57 · Accepted Answer · answered Dec 11 '18 at 20:13

57

In Visual Studio 2017, right click in Project in Solution Explorer -> Add -> New Item -> Search for "config" -> Add Web Configuration File. This will add web.config in your project with default stuff.

answered Dec 11 '18 at 20:13

Meet Shah

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Thank you. No need to search, it is there in the list when clicking on Web. Extra note: I used this simple web.config file in my project and when I published the whole solution using the File System method, I checked the 'auto-generated' version that it had created under the ...\publish\ directory and the new web.config file included the info I had added in the one I manually created PLUS the other CORE tags that it needed to generate. – Mario Levesque Mar 20 '19 at 13:10

score 23 · Answer 2 · answered Oct 16 '17 at 13:38

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For Asp.Net Core 2.0, and you still need to have web.config you can add a Web configuration item template. You can use that like change the max file upload limit etc.

The web.config file is generated when you are publishing the project.

answered Oct 16 '17 at 13:38

Freeubi

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How do you add a 'web configuration item template'? – Richard Garside Mar 20 '19 at 08:45
@RichardGarside File/Add new file :) – Freeubi Mar 20 '19 at 08:49

haiwuxing · Answer 3 · 2017-04-06T08:58:22.433

18

In ASP.NET Core 1.1 Web project that created by Visual Studio 2017, there is no more web.config file by default. If you need that file, you can create that file by yourself. For example:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.webServer>
  </system.webServer>
</configuration>

edited Apr 06 '17 at 08:58

answered Apr 06 '17 at 08:48

haiwuxing

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See [this](https://developercommunity.visualstudio.com/content/problem/26751/publish-aspnet-core-to-iis-with-windows-authentica.html) page if you need to set up Windows Authentication with IIS. Creating the web.config manually and adding the forwardWindowsAuthToken attribute was the only way I could get it to work. – James Toomey May 03 '17 at 17:43
1

This is the answer, and here is a link of an example: https://developercommunity.visualstudio.com/content/problem/26751/publish-aspnet-core-to-iis-with-windows-authentica.html – Antebios May 04 '18 at 21:30

Mike Gledhill · Answer 4 · 2017-09-05T13:02:02.140

This isn't a direct answer to your question, but I want to post this solution, as it is related.

Today, I found that VS2017 refused to start my web app as it said it couldn't find a web.config file.

The error message showed the path where it was searching for the web.config in, but it was a folder that had never existed on my laptop (I'd been sent the code from an external company). Even worse, our project didn't even contain a web.config file, so the error made no sense !!

I spent ages trying to get around this issue, reported by IIS Express with VS2017, and the solution was ridiculous:

I just had to increment the port number which my code was running under.

That's it.

Is this a bug with IIS/VS2017 ? I don't know. But it wasted a lot of my time this morning. And renaming the following folder out of the way, as suggested by other StackOverflow articles, didn't help:

C:\Windows\System32\inetsrv\config

Again, apologies - this isn't a direct answer to the question, but I'm sure I won't be the only person to stumble on this webpage, after receiving this bizarre "Can't find web.config" error, so I think it is useful to document here.

I had same problem. In my case I just corrected the project paths in the file `%sln%\.vs\config\applicationhost.config` XML Path: `/configuration/system.applicationHost/sites/site/application/virtualDirectory` — smoq, Jul 13 '18 at 08:45

Brijesh · Answer 5 · 2017-03-01T21:39:09.283

-5

In ASP.Net core we do not have web.config rather we have app.config file. In ASP.Net Core configuration has been changed a lot, now packages are managed via Package.json file.

In case you need to store some app related configuration then you can use appsetting.json file.

refer: https://zimmergren.net/using-appsettings-json-instead-of-web-config-in-net-core-projects/

edited Mar 01 '17 at 21:39

answered Mar 01 '17 at 21:32

Brijesh

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package.json is for managing NPM dependencies, which are not technically a part of ASP.NET Core. Nuget packages are managed in the *.csproj file now. – Jimmy Mar 02 '17 at 09:08
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How about the IIS settings that we configured through web.config? – Tiago Deliberali Santos Mar 04 '17 at 03:56
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@Brijesh I don't see app.config in my VS2017 ASP.NET core 1.1 app. Where can I find it? I even clicked on `Show All Files` icon but no luck. – nam Mar 22 '17 at 05:15
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what about asp.net core 2.0? – ManirajSS Sep 20 '17 at 12:30

web.config missing when creating ASP.NET Core Web App in VS 2017 RC?

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