Let's Encrypt confirmation on IIS not working

user_375192 0
Viewed 5067

I'm trying to use the Certify SSL Manager to configure SSL certificates from Let's Encrypt on my IIS server, but it fails during the check.

https://dev.mywebsite.com/.well-known/acme-challenge/configcheck/

This works:
https://dev.mywebsite.com/well-known/acme-challenge/configcheck https://dev.mywebsite.com/.well-known/acme-challenge/test.txt

So I assumed it's the . before well-known. But the fact that test.txt works confuses me.

I've already configured the directory according to this discussion: https://github.com/ebekker/ACMESharp/issues/15

I have a bunch of rewrite stuff in my web.config, but even if I remove that section completely, it still fails.

lets-encrypt iis
3 Answers

The configcheck url is a file, not a directory. Make sure that file exists on disk (i.e. C:\inetpub\wwwroot\.well-known\acme-challenge\configcheck) in your webroot. Then try to load your links with this barebones web.config in your website root directory (if using ASP.NET):

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <staticContent>
            <mimeMap fileExtension="." mimeType="application/unknown" />
        </staticContent>
    </system.webServer>
</configuration>

If that works, try slowly adding back in your web.config sections including routes/rewrite until you figure out what's causing the problem.

If using ASP.NET Core with a wwwroot folder hosting your static files, you'll have to modify your config in Startup.cs instead:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    string filepath = Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot/.well-known");
    app.UseStaticFiles(new StaticFileOptions()
    {
        FileProvider = new PhysicalFileProvider(filepath),
        RequestPath = new PathString("/.well-known"),
        ServeUnknownFileTypes = true
    });
    // ... your other startup code here
}
user_4906570

I had to modify the web.config as follow to fix the error:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
   <system.webServer>
      <staticContent>
         <mimeMap fileExtension="*" mimeType="text/plain" />
      </staticContent>
      <handlers>
         <clear />
         <add name="StaticFile" path="*" verb="*" type=""
            modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule"
            scriptProcessor="" resourceType="Either" requireAccess="Read"
            allowPathInfo="true" preCondition="" responseBufferLimit="4194304" />
      </handlers>
   </system.webServer>
</configuration>
user_77274720
Related