Supported Office 365 GCC High Apps and Services

Services/ Apps
Office Online (Word, Excel, PowerPoint)
Exchange Online (Outlook, Calendar, People)
Sharepoint Online (Sharepoint)
OneDrive for Business (OneDrive)

If your app is not listed, you may still be able to access it using the Office 365 portal. To sign in to the portal, use the Office 365 app on the Okta user dashboard.