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Web 3.x: activity processors write tag keys the Azure Monitor exporter doesn't map, so user_Id, session_Id and operation_SyntheticSource are empty

bug

Status: Open.

#3223 In Microsoft/ApplicationInsights-dotnet;

· joshsacks opened on Sep 29, 2026

Missing traceparent header and dependency telemetry on reused connections established before Application Insights initialization (dotnet framework)

bug

Status: Open.

#3220 In Microsoft/ApplicationInsights-dotnet;

· Mattia Di Eleuterio (madiele) opened on Sep 25, 2026

Error when HTTPGET to http://169.254.169.254/metadata/instance/compute?api-version=2017-08-01&format=json

bug

Status: Open.

#3217 In Microsoft/ApplicationInsights-dotnet;

· Tony Valenti (TonyValenti) opened on Sep 21, 2026

Criteria or timeline for a stable (non-prerelease) Microsoft.ApplicationInsights.NLogTarget 3.x

stale

Status: Open.

#3213 In Microsoft/ApplicationInsights-dotnet;

· Timothy Trowbridge (neotrow) opened on Sep 8, 2026

Adding Azure Application Insights Connected Service fails with circular ILoggerFactory dependency on .NET 11 with Microsoft.ApplicationInsights.AspNetCore 3.1.2; works on ApplicationInsights 3.0.0

keep-open

Status: Open.

#3201 In Microsoft/ApplicationInsights-dotnet;

· Cyril Christian Imperial (cyimperial) opened on Aug 3, 2026

_APPRESOURCEPREVIEW_ questions: billable, essential or needed, disable

documentation

Status: Open.

#3192 In Microsoft/ApplicationInsights-dotnet;

· Joseph H (JHops881) opened on Jun 24, 2026

AddAzureVMDetector() called on App Service, throws HttpRequestException

bug

keep-open

Status: Open.

#3179 In Microsoft/ApplicationInsights-dotnet;

· Matt Lavallee (MattLavalleeMA) opened on May 14, 2026

Version 3.1.0 with 3rd party DI framework crashes on application start

bug

keep-open

Status: Open.

#3176 In Microsoft/ApplicationInsights-dotnet;

· Peter Csajtai (z4kn4fein) opened on May 6, 2026

Migration to SDK v3 breaks out-of-the-box App Service Profiler support

documentation

keep-open

Status: Open.

#3169 In Microsoft/ApplicationInsights-dotnet;

· mirek-rynly opened on Apr 16, 2026

ApplicationInsights changes to AvailabilityTelemetry logging in v3.x loses AvailabilityTelemetry trace/span info

keep-open

Status: Open.

#3166 In Microsoft/ApplicationInsights-dotnet;

· John Crim (johncrim) opened on Apr 8, 2026

Cross-talk between two TelemetryClient instances via StartOperation

bug

keep-open

Status: Open.

#3165 In Microsoft/ApplicationInsights-dotnet;

· Paul Harrington (pharring) opened on Apr 7, 2026

Application insights script interfering with ajax post

bug

keep-open

Status: Open.

#3158 In Microsoft/ApplicationInsights-dotnet;

· John Staveley (johnstaveley) opened on Apr 1, 2026