Outlook software should update on its own. However, to help speed up the process, or if it gets stuck, you can follow these steps:
1. Go to File
2. Click 'Office Account'
3. Click 'Sign Out' from the options.

4. Click Sign In.
5. Sign in with your username@TAMUV.edu and the password you typically use.
6. Once logged back in, you should now see it default to @tamuv.edu