We have the same issue, but only if we use a full Globalprotect VPN and not if we use a split tunnel (default here). I found out the reason is that the GlobalProtect network interface has no default gateway, but only routes are pushed. Because of this, the Network Location Awareness service does not attempt to check if there is a connection to the internet. Office programs rely on the NLA service and don't check themselves if they are online. Because of this, the apps assume they are offline when you are connected via GlobalProtect. Other VPN service also have the same problem: https://superuser.com/questions/1447783/why-do-windows-10-apps-and-office-outlook-word-onedrive-etc-have-no-interne Our clients are asking if they can use the full VPN more and more, but with this problem we can't provide them with it..
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