Web App Publishing - An error occurred while starting the application

Question

User-1269159535 posted

Hi All

I am getting the message, "An error occurred while starting the application" on app launch after successful deployment of a web app via Visual Studio on Azure cloud. The application works well in Visual Studio. It is based on .NET framework 4.6. Kindly advise.

Regards,

D.O.

Answer 1

User61956409 posted

Hi ONYAND,

"An error occurred while starting the application" on app launch

The error message is too generic, it is difficult to find the issue with starting application. Azure provides built-in diagnostics to assist with debugging Azure app service web app, you can try to enable diagnostics logging and check if some useful information are written in logs.

With Regards,

Fei Han



Answer 2

User-1269159535 posted

Hi Fei,

I am new to Azure and discovered that one needs to set up application insights to derive details of the actual cause of the error (in this case 5xx). Still working on it and hoping to get the full error description just like in the development environment. Thanks for your feedback.

Regards,

D.O.

Answer 3

User61956409 posted

Hi ONYAND,

set up application insights to derive details of the actual cause of the error

Application insights can be used to monitor your live web application and detect & diagnose issues. You can get detailed information from this documentation.

With Regards,

Fei Han