Application Insights not showing data for Server Response Time, Server Requests or Failed Requests

13
votes

I have added Application Insights to my application.

After some time, I am correctly seeing the Browser Page Load Times, but none of the other graphs are showing any data at all.

I see this:

Missing Server Data

When I am expecting something along the lines of this:

What I am expecting

These are two ASP.NET MVC 5 applications that are in the same solution, and both are deployed to Azure.

In both cases:

  1. I have the correct javascript fragment in my razor layout (and have verified via the page source when viewing the website that it is both getting output, and that a request is sent to dc.services.visualstudio.com/v2/track);
  2. I have an ApplicationInsights.config in the web root;
  3. I am setting the correct instrumentation key during application startup, in the Application_Start() method of Global.asax.cs by way of TelemetryConfiguration.Active.InstrumentationKey = "the_key"

Please note that I DO NOT have the instrumentation key in the ApplicationInsights.config file as I am deploying the website multiple times, and are setting the instrumentation key in accordance with this advice.

I've reset everything up (following Add Application Insights SDK to monitor your ASP.NET app) but still, after at least 1/2 an hour, I am not seeing anything for Server Response Time, Server Requests or Failed Requests.

How do I fix this?

1
asp.net-mvcazure-web-app-serviceazure-application-insights
To diagnose the issue can you deploy the website to your local IIS and check in Fiddler the requests sent by w3wp process to /track endpoint. Ser if anything is sent and what ikey is used. – Alex Bulankou
@AlexBulankou thanks. As mentioned, I viewed the network logs to verify that a request is being sent to the dc.services.visualstudio.com/v2/track endpoint. In all cases, I see the json payload that includes a timestamp and the iKey, which is correct. – Brendan Green
Can you please send me Fiddler payload and ikey to [email protected] and I should be able to see whether data sent for this ikey was reaching our data collection servers and when. – Alex Bulankou
Have you added the App Insights Site Extension to your app? – BenV
are you seeing the requests to dc from the browser (where the page load time chart is coming from), or from the server? (does the fiddler trace show pageview/pageperformance events, or is it sending request events) – John Gardner

1 Answers

12
votes

Following some offline help from Alex Bulankou, I've resolved the issue.

It was difficult to pinpoint the precise combination that caused the issue, but I suspect it was due to mismatched versions of the Application Insights assemblies, a malformed ApplicationInsights.config file and something getting screwed up between adding Application Insights via the Visual Studio command and doing it manually.

The ultimate path to resolution was to:

  1. Remove all Microsoft.ApplicationInsights.* nuget packages from the project;
  2. Delete the existing ApplicationInsights.config file;
  3. Re-add the Microsoft.ApplicationInsights.Web nuget package only - it will install all the required dependencies, including a fresh ApplicationInsights.config file (that doesn't have the iKey, which is what I wanted - see below)
  4. My existing code to set the InstrumentationKey via Global.asax.cs remained unchanged

End result (I fixed this all at about 7am):

Now tracking Server Requests