Defender Vulnerability Management – Browser Extensions inventory shows "No Data" tenant-wide (GCC High)

Environment

• Cloud: Microsoft 365 GCC High (portal: security.microsoft.us)
• Product: Microsoft Defender for Endpoint Plan 2 with Defender Vulnerability Management
• Onboarded devices: affected: all
• Endpoint OS: Windows 11; browsers in scope: Edge, Chrome, Firefox

Problem Description

The Browser extensions tab (Vulnerability management > Inventories > Browser extensions) displays "No Data" for the entire tenant. All other Vulnerability Management areas populate normally — software inventory, security recommendations, weaknesses, etc— confirming devices are onboarded, healthy, and sending telemetry, and that DVM licensing is being recognized by the service.

Expected Behavior

Browser extensions assessment is a documented DVM premium capability supported in GCC High. With DVM licenses applied and Windows devices running Edge/Chrome/Firefox with extensions installed, the Browser extensions inventory should populate.

Troubleshooting

1. Verified DVM licenses are active and assigned in the tenant.
2. Confirmed affected devices are onboarded, active, and healthy in device inventory.
3. Confirmed endpoints have Edge/Chrome/Firefox installed with extensions present.
4. Verified all other DVM inventories/assessments populate normally.
5. Advanced Hunting query "DeviceTvmBrowserExtensions | take 1" returns query error indicating that extension telemetry may not be reaching the backend

Reference

This symptom matches a Microsoft-acknowledged known issue in the commercial cloud. In Microsoft Q&A thread "Defender for Endpoint Vulnerability Management Browser Extensions not populating" (Jan 2025, https://learn.microsoft.com/en-us/answers/questions/2141608/), a Microsoft moderator confirmed after consulting the Product Group that browser extension and hardware/firmware data not populating was a known backend issue reported by many customers, that engineering had identified it, and that a fix was being deployed globally to all tenants. We are seeing identical behavior in our GCC High tenant.