To access contacts in the Avaya Calling for Microsoft Teams application using a web browser, you must enable third-party cookies in the browser settings. However, if the third-party cookies policy is enforced at the enterprise level, your enterprise IT team must enable third-party cookies.

If third-party cookies are disabled due to network policies and the user enters valid credentials on the login screen, they cannot log in. Hence, the user cannot view any contacts. Avaya Calling for Microsoft Teams application displays a continuous spinner to the user.