We have implemented O365 SharePoint services in one of our MVC web application where we are reading the SharePoint List information. It works perfectly fine on local server but when we host our application to IIS we are getting 503 error.
Web application is built on .net 4.7.2 framework and we have used SharePointPnPCoreOnline.3.27.2011 package for SharePoint access.
Any help is highly appreciated.
Thank you.
