ApplicationInsightsProfiler exceptions

Question

We have an Application Insights instance linked with an App Service that runs a .NET8 Web API. The Application Insights Profiler has only the Sampling trigger enabled with Sample rate set to Normal. The CPU and Memory triggers are disabled. In the App Service > Application Insights under the "Instrument your application" section the Profiler is on and the Snapshot debugger is on.

At random times throughout the day we see pairs of Exceptions logged in Application Insights:

• First exception

type: System.Runtime.InteropServices.COMException 
assembly: ApplicationInsightsProfiler, Version=2.6.2201.2106, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
method: DiagnosticsHub.StandardCollector.Host.Interop.IStandardCollectorService.CreateSession
outerMessage: Exception from HRESULT: 0xE111005E
outerAssembly: ApplicationInsightsProfiler, Version=2.6.2201.2106, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
outerMethod: DiagnosticsHub.StandardCollector.Host.Interop.IStandardCollectorService.CreateSession

• Second exception (2 min later than the first one)

type: System.InvalidOperationException
assembly: ApplicationInsightsProfiler, Version=2.6.2201.2106, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
method: Microsoft.ServiceProfiler.Collectors.DetailedTraceCollector+

Answer 1

Please see https://aka.ms/ApplicationInsightsProfilerTooManySessions