Azure Let's Encrypt error

Question

I'm trying to get the Azure Let's encrypt site plug in working for one of my Azure websites following the instructions at:

https://gooroo.io/GoorooTHINK/Article/16420/Lets-Encrypt-Azure-Web-Apps-the-Free-and-Easy-Way/20047#.VxUIbKgrKUl

but I'm getting an authorization error when I run it. I have no idea where to start looking to try and solve this and any help would be more than welcome.

The error is as follows:

Microsoft.Rest.Azure.CloudException: The client '{id}' with object id '{same id here??}' does not have authorization to perform action 'Microsoft.Web/sites/read' over scope '/subscriptions/{subscription id} /resourceGroups/Default-Web-NorthEurope/providers/Microsoft.Web/sites/{sitename}'. at Microsoft.Azure.Management.WebSites.SitesOperations.d__29.MoveNext()

Update

It was an issue with the principles access to the web app.

I decided to follow through troy hunts walkthrough here: https://www.troyhunt.com/everything-you-need-to-know-about-loading-a-free-lets-encrypt-certificate-into-an-azure-website/

Which is pretty good - he uses the old azure portal to set up the active directory which I found a bit more useful as I could actually see what was going on.

Anyway I've got all the way through the process right up to the actual certificate request and now I am getting a 403 server error returned:

The remote server returned an error: (403) Forbidden.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Net.WebException: The remote server returned an error: (403) Forbidden.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 


[WebException: The remote server returned an error: (403) Forbidden.]
   System.Net.HttpWebRequest.GetResponse() +1390
   ACMESharp.AcmeClient.RequestHttpPost(Uri uri, Object message) +642

[AcmeWebException: Unexpected error]
   ACMESharp.AcmeClient.AuthorizeIdentifier(String dnsIdentifier) +435
   LetsEncrypt.SiteExtension.Core.CertificateManager.Authorize(Target target) in c:\Projects\LetsEncrypt-SiteExtension\LetsEncrypt-SiteExtension\LetsEncrypt.SiteExtension.Core\CertificateManager.cs:518
   LetsEncrypt.SiteExtension.Core.CertificateManager.Auto(Target binding) in c:\Projects\LetsEncrypt-SiteExtension\LetsEncrypt-SiteExtension\LetsEncrypt.SiteExtension.Core\CertificateManager.cs:441
   LetsEncrypt.SiteExtension.Core.CertificateManager.RequestAndInstallInternal(Target target) in c:\Projects\LetsEncrypt-SiteExtension\LetsEncrypt-SiteExtension\LetsEncrypt.SiteExtension.Core\CertificateManager.cs:244
   LetsEncrypt.SiteExtension.Controllers.HomeController.Install(RequestAndInstallModel model) +604
   lambda_method(Closure , ControllerBase , Object[] ) +104
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +169
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +22
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +32
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +50
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +225
   System.Web.Mvc.Async.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +34
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +26
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +100
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +36
   System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +12
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +22
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +21
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9644037
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

Answer 1

After adding the App Registration, it is necessary to add it as a Role Assignment to the Resource Group with the role "Contributer".

If you forget this, you will get the above error message.

After doing this, please restart the App Service before trying to run Lets encrypt extension again.