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I have an ASP.NET MVC application working on a Web Garden configuration. The application pool identity is set to a custom domain account (with local administator permissions). Application pool has 4 worker processes. Session state mode is set to serverState using the ASP.NET State service which runs on the same machine (not remote one).

Regarding to signalr I have noticed an OutOfMemoryException in the event log when trying to reconnect and negotiate and I am not being able to detect what is happening. Any help will be highly appreciated.

Some texts below in the errors are in Spanish (Sorry).

Below the reconnect error:

Event code: 3005 
Event message: Excepción no controlada. 
Event time: 05/11/2020 13:28:04 
Event time (UTC): 05/11/2020 12:28:04 
Event ID: 447eb425512c433387a36b70af64f768 
Event sequence: 1 
Event occurrence: 1 
Event detail code: 0 
 
Application information: 
    Application domain: /LM/W3SVC/2/ROOT-2-132490528843179653 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\inetpub\wwwroot\MyMVCApp\ 
    Machine name: MyServer 
 
Process information: 
    Process ID: 1668 
    Process name: w3wp.exe 
    Account name: MyDomain\MyAppPoolCustomIdentity 
 
Exception information: 
    Exception type: InvalidOperationException 
    Exception message: El método de inicialización Run previo al inicio de la aplicación del tipo WebActivatorEx.ActivationManager produjo una excepción con el siguiente mensaje de error: Se produjo una excepción de tipo 'System.OutOfMemoryException'..
   en System.Web.Compilation.BuildManager.InvokePreStartInitMethodsCore(ICollection`1 methods, Func`1 setHostingEnvironmentCultures)
   en System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods)
   en System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded)
   en System.Web.Compilation.BuildManager.ExecutePreAppStart()
   en System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException)

Se produjo una excepción de tipo 'System.OutOfMemoryException'.
   en System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   en System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   en System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   en System.Reflection.RuntimeAssembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, Boolean suppressSecurityChecks, StackCrawlMark& stackMark)
   en System.Reflection.Assembly.LoadFrom(String assemblyFile)
   en WebActivatorEx.ActivationManager.get_Assemblies()
   en WebActivatorEx.ActivationManager.RunActivationMethods[T](Boolean designerMode)
   en WebActivatorEx.ActivationManager.Run()

 
 
Request information: 
    Request URL: http://my.mvcapp.com/signalr/reconnect?transport=longPolling&clientProtocol=1.5&connectionToken=6Avu6HS5DNT2tKAPHT90nO3u8M2arqOCtaMVIGGiEi/ZsxSM3axZQUBukhn1C0p14qGfoIxy722kR3LhvsZb5Qq6ERwk8z9GA6DI4VGJ8fm8onV8pM79bGp2BTIwaareiiXFYGIWDJxWL7LKux6TwA==&connectionData=[{"name":"wstimerhub"}] 
    Request path: /signalr/reconnect 
    User host address: XXX.XX.X.XX 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: MyDomain\MyAppPoolCustomIdentity
 
Thread information: 
    Thread ID: 51 
    Thread account name: MyDomain\MyAppPoolCustomIdentity
    Is impersonating: False 
    Stack trace:    en System.Web.Compilation.BuildManager.InvokePreStartInitMethodsCore(ICollection`1 methods, Func`1 setHostingEnvironmentCultures)
   en System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods)
   en System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded)
   en System.Web.Compilation.BuildManager.ExecutePreAppStart()
   en System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException)
 
 
Custom event details: 

And below the signalr negotitate error (Event id 1309):

Event code: 3005 
Event message: Excepción no controlada. 
Event time: 05/11/2020 18:09:47 
Event time (UTC): 05/11/2020 17:09:47 
Event ID: c19a08970c4c44abb969098d601bc6e1 
Event sequence: 13649 
Event occurrence: 2 
Event detail code: 0 
 
Application information: 
    Application domain: /LM/W3SVC/2/ROOT-4-132490644058804577 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\inetpub\wwwroot\MyMVCApp\ 
    Machine name: MyServer 
 
Process information: 
    Process ID: 6936 
    Process name: w3wp.exe 
    Account name: MyDomain\MyAppPoolCustomIdentity  
 
Exception information: 
    Exception type: OutOfMemoryException 
    Exception message: Se produjo una excepción de tipo 'System.OutOfMemoryException'.
   en System.Web.Hosting.IIS7WorkerRequest.ReadRequestHeaders()
   en System.Web.Hosting.IIS7WorkerRequest.GetKnownRequestHeader(Int32 index)
   en System.Web.HttpWorkerRequest.HasEntityBody()
   en System.Web.HttpRequest.GetEncodingFromHeaders()
   en System.Web.HttpRequest.get_ContentEncoding()
   en System.Web.HttpRequest.get_QueryStringEncoding()
   en System.Web.HttpRequest.get_QueryStringText()
   en System.Web.HttpRequest.ValidateInputIfRequiredByConfig()
   en System.Web.HttpApplication.PipelineStepManager.ValidateHelper(HttpContext context)

 
 
Request information: 
    Request URL: http://my.mvcapp.com/signalr/negotiate?clientProtocol=1.5&connectionData=[{"name":"wstimerhub"}]&_=1604596208232 
    Request path: /signalr/negotiate 
    User host address: XXX.XX.XXX.XX 
    User: MyDomain\OneUser
    Is authenticated: True 
    Authentication Type: Negotiate 
    Thread account name: MyDomain\MyAppPoolCustomIdentity  
 
Thread information: 
    Thread ID: 86 
    Thread account name: MyDomain\MyAppPoolCustomIdentity 
    Is impersonating: False 
    Stack trace:    en System.Web.Hosting.IIS7WorkerRequest.ReadRequestHeaders()
   en System.Web.Hosting.IIS7WorkerRequest.GetKnownRequestHeader(Int32 index)
   en System.Web.HttpWorkerRequest.HasEntityBody()
   en System.Web.HttpRequest.GetEncodingFromHeaders()
   en System.Web.HttpRequest.get_ContentEncoding()
   en System.Web.HttpRequest.get_QueryStringEncoding()
   en System.Web.HttpRequest.get_QueryStringText()
   en System.Web.HttpRequest.ValidateInputIfRequiredByConfig()
   en System.Web.HttpApplication.PipelineStepManager.ValidateHelper(HttpContext context)
 
 
Custom event details: 
4

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