Microsoft.diagnosticshub.diagnostics.collectionstartfailedhubexception -

Common failure scenarios include:

await diagnosticHubSession.StartCollectionAsync(targetProcessId); Code Example (Illustrative) You would not typically catch

In Visual Studio: Debug → Options → Enable Diagnostic Tools while debugging (uncheck). If the problem disappears, a specific tool (e.g., CPU Usage) is misconfigured. 7. Code Example (Illustrative) You would not typically catch this exception in production code. However, a diagnostic extension or custom profiler host might handle it like this: Shut down other profilers

From the Visual Studio Installer → select More → Repair . This restores missing or corrupted Diagnostic Hub components. a specific tool (e.g.

Shut down other profilers, performance monitors, or secondary Visual Studio instances debugging the same process.

Delete temporary diagnostic files: %TEMP%\Microsoft Diagnostics Hub\ %LOCALAPPDATA%\Microsoft\VisualStudio\<version>\DiagnosticsHub\

Console.WriteLine($"Diagnostic collection failed: ex.Message"); if (ex.InnerException is UnauthorizedAccessException) Console.WriteLine("Try running Visual Studio as Administrator."); // Log to telemetry or retry with fallback configuration