Can't create certificate

Hi,

I’m trying to create a certificate for my domain www.cinbalans.nl.
But when I do so he is looking for the validation file in the directory …/.well-known/acme-challenge/ but when I go there certify is uploading this file to this destination, but deletes the file when it’s done being used. That’s I assume the reason that I ma getting an error.

If I go to letsdebug.net I get the following error:

But if I ping my domain, then I get the result that all packages are received.

2021-01-03 14:08:05.310 +01:00 [INF] One or more tests failed
2021-01-03 14:09:01.713 +01:00 [INF] ---- Beginning Request [www.cinbalans.nl] ----
2021-01-03 14:09:01.718 +01:00 [INF] Certify/5.2.1.0 (Windows; Microsoft Windows NT 6.2.9200.0) 
2021-01-03 14:09:01.744 +01:00 [INF] Beginning Certificate Request Process: www.cinbalans.nl using ACME Provider:Certes
2021-01-03 14:09:01.744 +01:00 [INF] Requested domains to include on certificate: cinbalans.nl;www.cinbalans.nl
2021-01-03 14:09:01.745 +01:00 [INF] Beginning certificate order for requested domains
2021-01-03 14:09:01.779 +01:00 [INF] BeginCertificateOrder: creating/retrieving order. Retries remaining:2 
2021-01-03 14:09:03.594 +01:00 [INF] Created ACME Order: https://acme-v02.api.letsencrypt.org/acme/order/48032717/7101051816
2021-01-03 14:09:03.887 +01:00 [INF] Fetching Authorizations.
2021-01-03 14:09:06.503 +01:00 [INF] Got http-01 challenge https://acme-v02.api.letsencrypt.org/acme/chall-v3/9708567618/nyAaQg
2021-01-03 14:09:07.088 +01:00 [INF] Got dns-01 challenge https://acme-v02.api.letsencrypt.org/acme/chall-v3/9708567618/-lOi5g
2021-01-03 14:09:08.288 +01:00 [INF] Got http-01 challenge https://acme-v02.api.letsencrypt.org/acme/chall-v3/9788369084/rrpU7A
2021-01-03 14:09:08.869 +01:00 [INF] Got dns-01 challenge https://acme-v02.api.letsencrypt.org/acme/chall-v3/9788369084/I7A3_g
2021-01-03 14:09:08.870 +01:00 [INF] Attempting Domain Validation: cinbalans.nl
2021-01-03 14:09:08.870 +01:00 [INF] Registering and Validating cinbalans.nl 
2021-01-03 14:09:08.870 +01:00 [INF] Performing automated challenge responses (cinbalans.nl)
2021-01-03 14:09:08.873 +01:00 [INF] Preparing challenge response for the issuing Certificate Authority to check at: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs with content 1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs.SG2UB9a9dlembOWOVjUJBbf6TE42r6brpHzO8I0QSH0
2021-01-03 14:09:08.873 +01:00 [INF] If the challenge response file is not accessible at this exact URL the validation will fail and a certificate will not be issued.
2021-01-03 14:09:08.917 +01:00 [INF] Using website path C:\Websites\www.cinbalans.nl
2021-01-03 14:09:08.918 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:09.997 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:09.997 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:10.002 +01:00 [ERR] Failed to confirm URL is accessible : http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:10.068 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:11.279 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:11.279 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:11.514 +01:00 [ERR] Failed to confirm URL is accessible : http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:11.516 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:12.783 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:12.783 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:12.783 +01:00 [ERR] Failed to confirm URL is accessible : http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:12.785 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:13.882 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:13.882 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:13.883 +01:00 [ERR] Failed to confirm URL is accessible : http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:13.885 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:15.041 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:15.041 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:15.042 +01:00 [ERR] Failed to confirm URL is accessible : http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:15.044 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:20.555 +01:00 [INF] (proxy api) URL is not accessible. Result: [404] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:20.555 +01:00 [INF] Checking URL is accessible: http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:21.539 +01:00 [ERR] Failed to confirm URL is accessible : http://cinbalans.nl/.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:21.541 +01:00 [INF] Requesting Validation: cinbalans.nl
2021-01-03 14:09:21.541 +01:00 [INF] Attempting Domain Validation: www.cinbalans.nl
2021-01-03 14:09:21.541 +01:00 [INF] Registering and Validating www.cinbalans.nl 
2021-01-03 14:09:21.542 +01:00 [INF] Performing automated challenge responses (www.cinbalans.nl)
2021-01-03 14:09:21.543 +01:00 [INF] Preparing challenge response for the issuing Certificate Authority to check at: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM with content 7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM.SG2UB9a9dlembOWOVjUJBbf6TE42r6brpHzO8I0QSH0
2021-01-03 14:09:21.543 +01:00 [INF] If the challenge response file is not accessible at this exact URL the validation will fail and a certificate will not be issued.
2021-01-03 14:09:21.568 +01:00 [INF] Using website path C:\Websites\www.cinbalans.nl
2021-01-03 14:09:21.568 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:23.608 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:23.608 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:23.612 +01:00 [ERR] Failed to confirm URL is accessible : http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:23.614 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:24.754 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:24.754 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:25.071 +01:00 [ERR] Failed to confirm URL is accessible : http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:25.074 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:26.221 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:26.221 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:26.221 +01:00 [ERR] Failed to confirm URL is accessible : http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:26.225 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:27.319 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:27.320 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:27.328 +01:00 [ERR] Failed to confirm URL is accessible : http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:27.330 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:28.670 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:28.670 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:28.675 +01:00 [ERR] Failed to confirm URL is accessible : http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:28.676 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: True, timeout: 5000ms]
2021-01-03 14:09:29.948 +01:00 [INF] (proxy api) URL is not accessible. Result: [301] Resource not accessible, Timeout or Redirected
2021-01-03 14:09:29.948 +01:00 [INF] Checking URL is accessible: http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM [proxyAPI: False, timeout: 5000ms]
2021-01-03 14:09:29.955 +01:00 [ERR] Failed to confirm URL is accessible : http://www.cinbalans.nl/.well-known/acme-challenge/7FaVbUwJnVRuyhLBhQGHBRTQBRj7ca6Y1H-u7TEDIiM 
System.Net.WebException: Cannot handle redirect from HTTP/HTTPS protocols to other dissimilar ones. ---> System.UriFormatException: Invalid URI: The hostname could not be parsed.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at System.Uri.CreateUri(Uri baseUri, String relativeUri, Boolean dontEscape)
   at System.Net.HttpWebRequest.CheckResubmit(Exception& e, Boolean& disableUpload)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Certify.Management.NetworkUtils.<CheckURL>d__4.MoveNext() in C:\Work\GIT\certify_dev\certify\src\Certify.Shared\Management\NetworkUtils.cs:line 153
2021-01-03 14:09:29.955 +01:00 [INF] Requesting Validation: www.cinbalans.nl
2021-01-03 14:09:29.971 +01:00 [INF] Attempting Challenge Response Validation for Domain: cinbalans.nl
2021-01-03 14:09:29.972 +01:00 [INF] Registering and Validating cinbalans.nl 
2021-01-03 14:09:29.972 +01:00 [INF] Checking automated challenge response for Domain: cinbalans.nl
2021-01-03 14:09:30.492 +01:00 [WRN] Challenge response validation still pending. Re-checking [10]..
2021-01-03 14:09:32.417 +01:00 [INF] Fetching https:///.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs: Invalid empty hostname in redirect target
2021-01-03 14:09:37.838 +01:00 [INF] Validation of the required challenges did not complete successfully. Fetching https:///.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs: Invalid empty hostname in redirect target
2021-01-03 14:09:37.838 +01:00 [INF] Validation of the required challenges did not complete successfully. Fetching https:///.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs: Invalid empty hostname in redirect target
2021-01-03 14:09:37.838 +01:00 [INF] Validation of the required challenges did not complete successfully. Fetching https:///.well-known/acme-challenge/1U6SS-DUqx8R662fFcRJEc6R400CF4BCMlmi_AbOPUs: Invalid empty hostname in redirect target
2021-01-03 14:43:32.179 +01:00 [INF] Previous renewals failed: 3. Renewal will be attempted within 48hrs.

Hope anyone can help me.

BR,
Kenneth

Your web server is responding with HTTP-301 redirects that are impossible to use.

image

With “https:///” there is no IP or host listed. The Let’s Debug page clearly states this is the issue and the Certify log also has problems with it. You must reconfigure IIS so the redirects contain your host in the location header.

1 Like

As @jljtgr says, your https redirects need to work but also check that you are using the latest version of Certify and that you have the http challenge server process enabled under Settings - the validation requests should be skipping IIS altogether (by default).