Angular v19, configuration: export const appConfig: ApplicationConfig = { providers: [ provideZoneChangeDetection({ eventCoalescing: true }), provideRouter(routes), provideAnimationsAsync(), provideAuth0({ domain: 'xxx', clientId: 'yyy', authorizationParams: { audience: 'aaa', redirect_uri: window.location.origin, }, }), provideHttpClient( withInterceptors([authHttpInterceptorFn]) ) ] }; Simple calling: this.auth.isAuthenticated$.subscribe((isAuthenticated) => { if (isAuthenticated) { this.http.get('/api/v1/tests').subscribe((data) => { console.log(data); }); } }); Token is never attached to Authorization header. When I try to get token by auth.getAccessTokenSilently() it works and I get the token. I could probably build my own interceptor but I would like to use the one made by Auth0. Continue reading...