Follow these steps before assigning licenses to users in your organization:

1.  Action required: Configure your DNS records for Office 365 GCC High.

2.  Action required: If you’re planning on using federated identities or hybrid co-existence there are additional network security requirements.

Microsoft Government Portal

Microsoft 365 Admin Portal GCC High
Intune Web Company Portal
Microsoft Cloud App Security Portal
Dynamics 365 Instance Administration GCC Moderate
Dynamics 365 Instance Administration GCC High
Microsoft Entra ID Portal GCC High
Security & Compliance GCC High
Microsoft 365 Compliance GCC
Microsoft 365 Security GCC
Power Apps GCC High
Power Platform Admin Center GCC Moderate
Microsoft Power Automate End User GCC Moderate
Power BI GCC Moderate
OneDrive admin center GCC High
Exchange Admin Center GCC High
Microsoft Teams Admin Center GCC
Microsoft Defender for Endpoint GCC
Microsoft Endpoint Manager Government admin center GCC
Microsoft Defender for Identity GCC
Microsoft Defender for Endpoint GCC High