Microsoft.diagnosticshub.diagnostics.collectionstartfailedhubexception Hot! Jun 2026

Always examine InnerException and Data properties. It frequently contains HRESULTs (e.g., 0x80070005 = access denied, 0x80004005 = unspecified error).

to uninstall them, then repeat the process to check and reinstall them. 4. Run as Administrator

var providers = new List<EventPipeProvider>(); session = client.StartEventPipeSession(providers, false); // ... collect data Always examine InnerException and Data properties

: Missing or broken Diagnostic Hub components.

– Do not leave Visual Studio profilers, WPR, or perfmon running in the background. – Do not leave Visual Studio profilers, WPR,

Sometimes the profiler fails because it cannot write to its temporary directory: Visual Studio Developer Community in Visual Studio. Navigate to Diagnostic Tools

Navigate to your project folder and delete the .vs hidden folder. Close Visual Studio.

If the service is missing or fails to start with an error like "Status Invalid Image Format," it indicates a mismatch in file architecture or a corrupted component. Open the Visual Studio Installer . Find your installed version and click > Repair . Restart your computer after the repair is complete. 3. Change Build Configuration

Cached or corrupted diagnostic session files can block new sessions from starting. Close Visual Studio.