Application Insights provides misleading picture by introducing fake "Execute request handler" requests

[zakimaksyutov]

My web site was completely down for some period of time but Application Insights made us think that some requests were succeeding (leading us to wrong theory, and delaying mitigation):

After we opened web app view then it became clear that there were no successful requests during this time:

Looks like that Application Insights always creates a fake "Execute request handler". These requests are always marked as succeeded:

This also explained why Application Insights showed twice as much traffic than it really was.

We use the following version:

<package id="Microsoft.ApplicationInsights" version="2.10.0" targetFramework="net461" /> <package id="Microsoft.ApplicationInsights.Agent.Intercept" version="2.4.0" targetFramework="net461" /> <package id="Microsoft.ApplicationInsights.DependencyCollector" version="2.10.0" targetFramework="net461" /> <package id="Microsoft.ApplicationInsights.PerfCounterCollector" version="2.10.0" targetFramework="net461" /> <package id="Microsoft.ApplicationInsights.Web" version="2.10.0" targetFramework="net461" /> <package id="Microsoft.ApplicationInsights.WindowsServer" version="2.10.0" targetFramework="net461" /> <package id="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel" version="2.10.0" targetFramework="net461" />

[lmolkova]

We have removed 'Execute request handler' requests in AppInsights 2.11.0. They initially intended to workaround the correlation issue for POST requests microsoft/ApplicationInsights-dotnet-server#898 and they have their own limitations. The latest version solves the issue without introducing intermediate requests.

I'm closing this issue as there is no further action item. Feel free to reopen as needed.

[zakimaksyutov]

Upgraded to 2.11 and everything works as expected now! Thank you! =)

[agelenava]

Hi!
I just faced the same issue. I see 'Execute request handler' for each request in AI

We use AI version 2.13.1

Is there a way to turn off this 'fake' event?
Thank you in advance.