Sourced from Microsoft.ApplicationInsights.AspNetCore's releases.

3.1.0

Version 3.1.0

• Make TelemetryContext properties public and propagate them via TelemetryClient.
• Add fallback to APPLICATIONINSIGHTS_CONNECTION_STRING environment variable for Base, Web, and NLog packages when connection string is not set via code.
• Update Azure.Monitor.OpenTelemetry.Exporter to 1.7.0. This includes updated mappings for telemetry context.
• Fix OTEL_SDK_DISABLED not being honored when TelemetryConfiguration.DisableTelemetry is set in DI scenarios., #​3157
• Fix TrackAvailability ignoring user-specified Timestamp on AvailabilityTelemetry. The timestamp is now emitted as microsoft.availability.testTimestamp so downstream exporters can use the correct event time.
• Added netstandard2.0 target framework to Microsoft.ApplicationInsights package to support customers with shared libraries targeting netstandard2.0.
• Fix TelemetryClient.Context.Cloud.RoleName set after construction now applies to all telemetry.
• Fix bug where Debug/Trace level logs from TrackTrace API were not emitted to Application Insights
• Fix Track API calls to not mutate the passed in dictionary if it is readonly
• Fix NullReferenceException in TelemetryClient.Flush() and FlushAsync() when called from DI scenarios
• Fix ApplicationVersion ignored: ApplicationInsightsServiceOptions.ApplicationVersion is now applied as service.version on the OpenTelemetry Resource for both AspNetCore and WorkerService packages
• Fix HttpRequestExtensions.UnvalidatedGetHeader always returning empty string instead of the actual header value. Restored max-length enforcement to guard against oversized header values.

3.0.0

• Replaced netstandard2.0 with net8.0 target framework in Microsoft.ApplicationInsights.NLogTarget package.

3.0.0-rc1

• Removed netstandard2.0 target framework from Microsoft.ApplicationInsights, Microsoft.ApplicationInsights.AspNetCore, and Microsoft.ApplicationInsights.WorkerService packages.
• The JavaScript in Microsoft.ApplicationInsights.AspNetCore has been updated to version 10.
• Centralized package version management
• Update OpenTelemetry dependencies, #​3092
  • OpenTelemetry 1.15.0
  • OpenTelemetry.Instrumentation.AspNetCore 1.15.0
  • OpenTelemetry.Instrumentation.AspNet 1.15.1
  • OpenTelemetry.Instrumentation.Http 1.15.0
  • OpenTelemetry.Instrumentation.SqlClient 1.15.0
• Vendored OpenTelemetry.Resources.Azure resource detectors to NETCORE shared folder, replaced package with vendored implementation, #​3093
• Added support to disable telemetry via TelemetryConfiguration.DisableTelemetry
• Removed EnabledAdaptiveSampling and replaced with TracesPerSecond and SamplingRatio
• Added EnableTraceBasedLogsSampler property to ApplicationInsightsServiceOptions for ASP.NET Core and WorkerService packages
• Added support for StorageDirectory and DisableOfflineStorage from TelemetryConfiguration in DI scenarios
• Update Azure.Monitor.OpenTelemetry.Exporter dependency to 1.6.0

3.0.0-beta2

Added

• Automatic configuration binding from "ApplicationInsights" section in appsettings.json for both AspNetCore and WorkerService packages with configuration precedence: environment variables > explicit configuration > appsettings.json
• Added support for Entra ID (Azure Active Directory) authentication using Azure.Core.TokenCredential
• Added Self Diagnostics feature
• Updated the default sampler from Fixed Rate to Rate-Limited Sampling.
• Update Azure Monitor Exporter to 1.6.0-beta.2
• Add comprehensive applicationinsights.config support
• Add properties in TelemetryConfiguration to configure underlying exporter

Bug fix

• Fix TrackMetric(MetricTelemetry) unsupported telemetry type error

3.0.0-beta1

• The following Application Insights packages in this repo now use OpenTelemetry internally. OpenTelemetry is the industry standard for telemetry collection and provides better interoperability with other observability tools.
  • Microsoft.ApplicationInsights
  • Microsoft.ApplicationInsights.AspNetCore
  • Microsoft.ApplicationInsights.WorkerService
  • Microsoft.ApplicationInsights.Web
  • Microsoft.ApplicationInsights.NLogTarget
• Classic APIs of the above packages are preserved; calls are translated to OpenTelemetry telemetry.
• Other packages not listed above (such as certain auto-collectors and logging adapters that were published from this repo previously) will not have future versions published. See BreakingChanges.md for details.

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