Error 404 when publishing

[Hercules187]

Error 404 when compiling and publishing to Azure as per module 3, no actual guidance on how to edit web.config if following Gaining Expertise with Azure B2C. When published get error 404

[HttpRequestException: Response status code does not indicate success: 404 (Not Found).]
System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode() +94579
Microsoft.IdentityModel.Protocols.d__8.MoveNext() +360

[IOException: IDX20804: Unable to retrieve document from: 'https://login.microsoftonline.com/tfp//B2C_1_SignUpSignIn/v2.0/.well-known/openid-configuration'.]
Microsoft.IdentityModel.Protocols.d__8.MoveNext() +648
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.IdentityModel.Protocols.OpenIdConnect.d__3.MoveNext() +291
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) +26
Microsoft.IdentityModel.Protocols.d__24.MoveNext() +1129

[InvalidOperationException: IDX20803: Unable to obtain configuration from: 'https://login.microsoftonline.com/tfp//B2C_1_SignUpSignIn/v2.0/.well-known/openid-configuration'.]
Microsoft.IdentityModel.Protocols.d__24.MoveNext() +1586
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Security.OpenIdConnect.d__c.MoveNext() +575
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Security.Infrastructure.d__b.MoveNext() +282
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Security.Infrastructure.d__8.MoveNext() +275
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Security.Infrastructure.d__5.MoveNext() +160
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Security.Infrastructure.d__0.MoveNext() +815
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.d__5.MoveNext() +182
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Security.Infrastructure.d__0.MoveNext() +638
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.d__5.MoveNext() +182
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.d__2.MoveNext() +180
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.StageAsyncResult.End(IAsyncResult ar) +69
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult ar) +64
System.Web.AsyncEventExecutionStep.InvokeEndHandler(IAsyncResult ar) +165
System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +9930149

If update NUGET packes MSAL gets updated and breaks the solution completely as ConfidentialClientApplication and ClientCredential are obsolete.