Here are more details to confirm if you are having the same issue as I did:
1. Open Turbotax authentication log file
Path: C:\Users\<current user>\AppData\Local\Intuit\Common\Authorization\v4\Logs\IntuitAuthLog.txt
2. Error: System.Net.WebException: The remote name could not be resolved: 'accounts-tax.intuit.com'
3. Full error details:
tt2023 PID(5272) TID(1) 2023.0.0.9011 12/9/24 2:30:25:195 PM ERROR Intuit.Spc.Authorization.AuthorizationClient "Intuit.Spc.Authorization.NetworkCommunicationException: The remote name could not be resolved: 'accounts-tax.intuit.com' ---> Intuit.Spc.Authorization.NetworkCommunicationException: The remote name could not be resolved: 'accounts-tax.intuit.com' ---> System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The remote name could not be resolved: 'accounts-tax.intuit.com'
at System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult, TransportContext& context)
at System.Net.Http.HttpClientHandler.GetRequestStreamCallback(IAsyncResult ar)
--- End of inner exception stack trace ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at Intuit.Spc.Authorization.Internal.Http.LoggingHttpClient.<SendRequestAsync>d__3.MoveNext()
--- End of inner exception stack trace ---
at Intuit.Spc.Authorization.Internal.Http.LoggingHttpClient.<SendRequestAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at Intuit.Spc.Authorization.AuthorizationClient.<RetrieveWebSessionHydrationUrlInternalAsync>d__65.MoveNext()
--- End of inner exception stack trace ---
at Intuit.Spc.Authorization.NetworkCommunicationException.CreateNetworkCommunicationException(Exception exception, HttpRequestMessage httpRequestMessage)
at Intuit.Spc.Authorization.Internal.Transactions.HttpTransaction.HandleResponseError(Exception exception, HttpRequestMessage httpRequestMessage)
at Intuit.Spc.Authorization.AuthorizationClient.<RetrieveWebSessionHydrationUrlInternalAsync>d__65.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Intuit.Spc.Authorization.AuthorizationClient.<RetrieveWebSessionHydrationUrlAsync>d__64.MoveNext()"
