Microsoft Azure Open Source Development Support Team Blog

Support for Open Source Technologies on Microsoft Azure App Service

Query strings exceed 1,024 characters using OAuth 2.0/AD with Node.js Azure Web Apps

If you are implementing OAuth 2.0 protocol with Active Directory, you need to consider that Access tokens responses can increase to more than 1024 characters in some scenarios and you can get http 404.15 errors {Query String Too Long }, by default Azure Web Apps have a limit on Query String length, you can modify this limit with the following configuration:

querystring