Issue:

User received a Phishing Email but can't report the message as Phishing because the Phish Alert Report  button in the Outlook is missing..

Solution:

1.  Login to Office365 and open Outlook on the Web (OWA). In Outlook on the Web, click on the Settings icon.

2. Click View all Outlook settings, to access all the Outlook settings and edit your settings.

3. In the Settings window, select Mail and Customize actions.

4. Under Customize actions, select Phish Alert, then Save and close the window.