Microsoft.diagnosticshub.diagnostics.collectionstartfailedhubexception Review

From the Visual Studio Installer → select More → Repair . This restores missing or corrupted Diagnostic Hub components.

If the target process requires elevation, launch Visual Studio with admin rights ( Right-click → Run as administrator ). From the Visual Studio Installer → select More → Repair

| Aspect | Detail | |--------|--------| | Type | Developer-environment exception, not production code | | Primary source | Visual Studio Diagnostic Tools | | Meaning | Failed to begin collecting performance/debug data from a target process | | Most common fix | Run VS as admin, close other profilers, repair VS | | Inner exception significance | High – reveals actual system-level failure | This exception is a diagnostic failure of a diagnostic tool—an ironic but informative error that typically points to environment or permission issues rather than a bug in your application code. | Aspect | Detail | |--------|--------| | Type

await diagnosticHubSession.StartCollectionAsync(targetProcessId); close other profilers

try

1. Overview & Context The exception microsoft.diagnosticshub.diagnostics.collectionstartfailedhubexception is a specific, platform-level error originating from Microsoft’s Diagnostic Hub —a component primarily used within Visual Studio and other Microsoft developer tools (like Performance Profiler, CPU Usage tool, Memory Usage tool, and IntelliTrace).