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Editorial Team
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Asked: 2026-06-02T20:54:01+00:00

I know that in the following cases Apllication_end will be called: edit the config

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I know that in the following cases Apllication_end will be called:

  1. edit the config file for an application that’s running.
  2. change a dll in the bin directory.
  3. stop (or restart) IIS.
  4. Process Recycling turned on either in IIS6 App Pools, or using the aspnet worker process.

but my question is what are the cases when it’s won’t be called?
I know it won’t be called if you manually End w3wp process or if the server will brutally shut down.

Is there any other scenarios?

Thanks!

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1 Answer

  1. Editorial Team

    It seems that the brutal shut down can be caused by OutOfMemoryException that caused failure in creating AppDomain that are needed for executing requests.
    In this scenario Application_end won’t be called.

    Event Type: Error
    Event Source: ASP.NET 2.0.50727.0
    Event Category: None
    Event ID: 1334
    Date: 4/22/2012
    Time: 11:23:13 AM
    User: N/A
    Computer: CCBSHAIS02
    Description:
    Failed to initialize the AppDomain:/LM/W3SVC/1/Root/AgentWS

    Exception: System.SystemException

    Message: Failed to create AppDomain.

    StackTrace: at
    System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(String
    appId, IApplicationHost appHost, HostingEnvironmentParameters
    hostingParameters) at
    System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironmentAndReportErrors(String
    appId, IApplicationHost appHost, HostingEnvironmentParameters
    hostingParameters)

    InnerException: System.OutOfMemoryException

    Message: Exception of type ‘System.OutOfMemoryException’ was thrown.

    StackTrace: at System.AppDomain.nCreateDomain(String friendlyName,
    AppDomainSetup setup, Evidence providedSecurityInfo, Evidence
    creatorsSecurityInfo, IntPtr parentSecurityDescriptor) at
    System.AppDomain.CreateDomain(String friendlyName, Evidence
    securityInfo, AppDomainSetup info) at
    System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(String
    appId, IApplicationHost appHost, HostingEnvironmentParameters
    hostingParameters)

    for further reading on IIS and AppDomains look at: http://weblogs.asp.net/owscott/archive/2007/09/02/application-vs-appdomain.aspx

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