I am working on upgrading legacy .net application. It was written in .net 2.0 , I have upgraded the framework to 3.5. Deployed into IIS with runtime version v2.0. It worked fine.
And now I have upgraded it to v4.8, it is working fine from my location machine, when I execute the application. So I published it , copied the published folder to dev server , made necessary changes in: IIS - (the application needs to be on Windows authentication - so enabled) - Application pool ( two pools available , 1. target on runtime v2.0 2. target on runtime v4.0) Whichever pool I use, application is not running. It prompts to authenticate, even though I enter correct credentials, it still prompts me to enter credentials. When I cancel I see the below message.
HTTP Error 401.2 - Unauthorized You are not authorized to view this page due to invalid authentication headers.
I referred these with no help to my problem. ASP.NET MVC application problems after upgrade Framework upgrade from .net 3.5 to .net 4.8 Unable to access web application after upgrading from .Net Framework 4.6 to .Net Framework 4.8
Thank you for help in advance.
