Make sure you're connected to VPN prior to attempting the instructions below: Using GlobalProtect VPN
Open Control Panel (click Windows button and type Control Panel).
Click the Mail (32-bit) application.
Click the Show Profiles button.
Click the Add… button to add a new profile.
Name it New Profile (or something similar to distinguish it as separate from your existing profile) then click OK (disregard profile name in screen grab below).
Complete the steps for adding your account.
Make sure the new New Profile profile is set as your default profile in the drop down box at the bottom.
Click OK and then launch Outlook.