Microsoft Defender for Endpoint Showing in Red Canary as Unknown

Issue

No data is showing up in the Endpoints page.

Hostname show as (hostname unknown).

Environment

Microsoft Defender for Endpoint (formerly ATP)

Resolution

Verify the following Step has been performed in the onboarding instructions which authorize Red Canary to access the Defender API:

Grant Red Canary permissions to your Microsoft Defender API 

While logged in as a Global Administrator, approve permissions for Red Canary API integration by clicking this link: 

https://login.microsoftonline.com/common/oauth2/authorize?prompt=consent&client_id=69561a74-a59d-43f4-a113-8bc2da00f822&response_type=code&sso_reload=true