Error after upgrading to Windows Server 2019

Can’t renew certificates after upgraded my system from Windows Server 2016 to 2019. Every time getting this error:

2018-10-12 11:34:45.788 +03:00 [INF] A problem occurred while checking challenge responses: System.NullReferenceException: Object reference not set to an instance of an object.
at Certify.Providers.Certes.CertesACMEProvider.d__22.MoveNext()
— 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.CertifyManager.d__11.MoveNext() in D:\Work\GIT\certify\src\Certify.Core\Management\CertifyManager\CertifyManager.CertificateRequest.cs:line 586
2018-10-12 11:34:48.184 +03:00 [INF] Validation of the required challenges did not complete successfully. A problem occurred while checking challenge responses: System.NullReferenceException: Object reference not set to an instance of an object.
at Certify.Providers.Certes.CertesACMEProvider.d__22.MoveNext()
— 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.CertifyManager.d__11.MoveNext() in D:\Work\GIT\certify\src\Certify.Core\Management\CertifyManager\CertifyManager.CertificateRequest.cs:line 586
2018-10-12 11:34:48.184 +03:00 [INF] Validation of the required challenges did not complete successfully. A problem occurred while checking challenge responses: System.NullReferenceException: Object reference not set to an instance of an object.
at Certify.Providers.Certes.CertesACMEProvider.d__22.MoveNext()
— 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.CertifyManager.d__11.MoveNext() in D:\Work\GIT\certify\src\Certify.Core\Management\CertifyManager\CertifyManager.CertificateRequest.cs:line 586

Thanks, Server 2019 is not yet supported but I’ll investigate as soon as possible.

Any update on this? We have the same issue in our environment

Hi, yes there are no known issues with server 2019 support. Please email any recurring fault you are seeing to support at certifytheweb.com including and error logs you can provide.