I am testing the Java project I downloaded from https://github.com/Azure-Samples/ms-identity-java-daemon/archive/master.zip.
The sample program is working well, from which the used url is "https://graph.microsoft.com/v1.0/user".
But when I change the url to https://email@example.com/contacts,
it has the error like this "Connection returned HTTP code: 404 with message: Not Found".
(firstname.lastname@example.org is my Azure AD email.)
Of course, I've added Contacts.Read and Contacts.ReadWrite as API permissions for changed url, and then they are Granted for my API.
I want to know it is possible to access the changed url(https://email@example.com/contacts)
as a background service without sign in.
Please give me some hint or solution to access this url!!!
FYI, I succeeded in accessing this url in the graph-explorer.