Microsoft.ApplicationInsights missing

could not load file or assembly 'microsoft applicationinsights
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I am having problem with starting ASP.NET MVC5 application. Everything was working fine until now. While starting application I am getting below error:

Could not load file or assembly 'Microsoft.ApplicationInsights, Version=1.2.3.490, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.ApplicationInsights, Version=1.2.3.490, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

I have Microsoft.ApplicationInsights 1.2.3 installed. I also tried clean, rebuild, restart computer, restart computer and leave the room etc etc.

Does someone have any idea how to solve that problem ?

Try reinstalling the package using NuGet package manager. Install an updated version if possible.

Troubleshooting no data - Application Insights for .NET, Missing menu command to open Application Insights from Visual Studio. When I right-click my project Solution Explorer, I don't see any  Make sure your Visual Studio version is 2013 update 3 or later. Select Tools, Extensions and Updates and check that Developer Analytics tools is installed and enabled. If so, click Right-click your project in Solution Explorer. If you see the command Application Insights > Configure

Missing Microsoft.ApplicationInsights.WindowsServer , After upgrading to .ET Framework version 4.8, I got this error whiles performing a build on test on Azure DevOps. I have followed the NuGet  dotnet add package Microsoft.ApplicationInsights --version 2.14.0 <PackageReference Include="Microsoft.ApplicationInsights" Version="2.14.0" /> For projects that support PackageReference , copy this XML node into the project file to reference the package.

I installed the new version with Install-Package Microsoft.ApplicationInsights -Version 2.10.0 and I got the same error. I added this line into Web.config under <runtime><assemblyBinding ...> and it seems working for me, make sure to have Microsoft.ApplicationInsights.dll file in the bin folder as well. Good luck.

<dependentAssembly>
  <assemblyIdentity name="Microsoft.ApplicationInsights" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
  <bindingRedirect oldVersion="0.0.0.0-2.10.0.0" newVersion="2.10.0.0"/>
</dependentAssembly>

Microsoft.ApplicationInsights 2.14.0, Microsoft.ApplicationInsights 2.14.0. Application Insights Base API. This package provides core functionality for transmission of all Application Insights Telemetry  microsoft / ApplicationInsights-Java. NULL check missing in agent instrumentation code #506. Add Instrumentation to Collect Missing HTTP Parameters #567.

Microsoft.ApplicationInsights.DependencyCollector , Microsoft.ApplicationInsights.DependencyCollector 2.14.0. Application Insights Dependency Collector for .NET applications. This is a dependent package for  No service for type 'Microsoft.ApplicationInsights.AspNetCore.JavaScriptSnippet' has been registered. I also note that there’s conflicting information as to whether adding: @inject Microsoft.ApplicationInsights.AspNetCore.JavaScriptSnippet JavaScriptSnippet And @Html.Raw(JavaScriptSnippet.FullScript) Are necessary or should be removed.

microsoft/ApplicationInsights-Home, I have these components in Application Insights. However, after clicking "​Update map components", some dependency components missing  dotnet add package Microsoft.ApplicationInsights.DependencyCollector --version 2.14.0 <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.14.0" /> For projects that support PackageReference , copy this XML node into the project file to reference the package.

Custom metric namespace name missing · Issue #1717 · microsoft , shown on Azure portal - Application Insights - Metrics tab. In the screenshot you can see 3 different custom namespaces, though their name Microsoft. Application Insights. Extensibility Namespace In this article Classes AutocollectedMetricsExtractor: Extracts auto-collected, pre-aggregated (aka