Connecting to Azure Active Directory from ASP.NET application

I am trying to connect to Azure Active Directory from an ASP.NET application. I am following this article by Microsoft to write the code:

https://docs.microsoft.com/en-us/azure/active-directory/develop/quickstart-v2-aspnet-webapp#prerequisites

Below are my values I am putting in the application:

    <add key="ClientId" value="XXXXXXXXXX" />
    <add key="Tenant" value="XXXXXXXXXXXXXXXXXXXX" />
    <add key="Authority" value="https://login.microsoftonline.com/{0}/v2.0" />
    <add key="redirectUri" value="https://localhost:5000/" />

For my redirect URI, I use https://localhost:5000/. This is what I configured in my App registrations in the Azure portal. When I run my application, I get this error:

When I change the redirectUri to https://localhost:44368/ then I can see the Microsoft login and Microsoft accepts the userId too, but I get an error after inputting my password saying :

AADSTS50011: The reply URL specified in the request does not match the reply URLs configured for the application:

Any help will be highly appreciated.