Timothy Mothra

@macrogreg Can you take a look at this? I think it's related to the lock in [MetricSeriesAggregatorBase.UpdateAggregate()](https://github.com/microsoft/ApplicationInsights-dotnet/blob/f181abbcdf6a6a2a4aea821ce1d72e98b0c68fbe/src/Microsoft.ApplicationInsights/Metrics/Extensibility/MetricSeriesAggregatorBase.cs#L376): https://github.com/microsoft/ApplicationInsights-dotnet/blob/f181abbcdf6a6a2a4aea821ce1d72e98b0c68fbe/src/Microsoft.ApplicationInsights/Metrics/Extensibility/MetricSeriesAggregatorBase.cs#L392-L394

As a workaround, if you're not using the `GetMetric().Track()` api you can remove the Metrics pre aggregator Processor from your configuration.

Hello All, We released [v2.21-beta2](https://www.nuget.org/packages/Microsoft.ApplicationInsights/2.21.0-beta2) today which contains a fix for this issue. If anyone can test this new beta, please write back and share if the issue is resolved...

Hello All, We released [v2.21.0](https://www.nuget.org/packages/Microsoft.ApplicationInsights/2.21.0) today, which contains a fix for this issue. We're going to leave this issue open until we get confirmation that this issue has been resolved.

I closed the PR but I don't want to close this issue. My PR broke the EventSource and exposed a gap in our tests that we don't currently catch. **Even...

I confirmed that this bug was fixed in our SDK 2.10. https://github.com/microsoft/ApplicationInsights-dotnet/blob/a26a43f012ef6afca563b43b16ab019698a3f062/NETCORE/src/Microsoft.ApplicationInsights.AspNetCore/TelemetryInitializers/WebSessionTelemetryInitializer.cs#L60-L64 This will get fixed when Azure App Services updates to our latest SDK. @Mikhail-msft can you confirm which...

Hi @melborp, Thanks for reporting, I'm sorry you're having trouble with this. I checked the code, here's the method that's throwing: https://github.com/microsoft/ApplicationInsights-dotnet/blob/743848ab2bf9ec465ac8b313a4b6626b60c7315e/NETCORE/src/Microsoft.ApplicationInsights.AspNetCore/TelemetryInitializers/WebSessionTelemetryInitializer.cs#L60-L76 As you can see, we're already performing a...

@Mikhail-msft which product is the 2.8.36 extension? is that WAD?

@vishweshbankwar SDK v2.8.0 was released in September 2019. The current version is v2.14.0, released in April 2020. Are there any plans to upgrade?

@Mikhail-msft The versions numbers are in sync now. NetCore 2.8 ~ AI SDK 2.11 NetCore 2.14 ~ AI SDK 2.14