Bearer error - invalid_token - The signature key was not found
问题 I have an Angular 7 application interfacing with a .Net Core 2.2 API back-end. This is interfacing with Azure Active Directory. On the Angular 7 side, it is authenticating properly with AAD and I am getting a valid JWT back as verified on jwt.io. On the .Net Core API side I created a simple test API that has [Authorize] on it. When I call this method from Angular, after adding the Bearer token, I am getting (as seen in Chrome Debug Tools, Network tab, "Headers"): WWW-Authenticate: Bearer