HTTP Error 500 30 - ANCM In-Process Start Failure

Question

I was experimenting with a new feature that comes with  net core sdk 2 2 that is supposedly meant to improve performance by around 400    Impressive so I tried it out on my ABP  ASP NET Boilerplate  project  Template asp net core mvc  4 0 2 0  I added the following to my web mv cproj file      lt PropertyGroup gt       lt TargetFramework gt netcoreapp2 2 lt  TargetFramework gt       lt AspNetCoreHostingModel gt InProcess lt  AspNetCoreHostingModel gt     lt  PropertyGroup gt      lt ItemGroup gt       lt PackageReference Include  Microsoft AspNetCore App    gt       lt PackageReference Include  Microsoft AspNetCore Razor Design  Version  2 2 0  PrivateAssets  All    gt     lt  ItemGroup gt    Unfortunately I do not think this version of the ABP framework is compatible as the project simply fails to run and throws   eventually      HTTP Error 500 30 - ANCM In-Process Start Failure   I checked the logs after setting stdoutLogEnabled  true  in the web config and re-trying - but no entries   Has anybody had any success running the current ABP against a asp net core in process setup   I m thinking this may be something only available in ABP vNext

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For us  it was after install EF 5 on an existing core project  On the PC of my colleague  after a publish  he was having this DLL file   mscordaccore amd64 amd64 4 700 20 20201 dll And me  this one   mscordaccore amd64 amd64 4 700 20 36602 dll After his publish to release  the website returned the HTTP Error 500 30  After my own publish to release  the website was working fine

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Well for me I had a complicated app startup in which I had created my own WebHostBuilder  This worked fine but failed when I tried the InProcess hosting mode   I assume there was something I missed calling in WebHostBuilder  So I made sure I always call WebHost CreateDefaultBuilder args   then make any extra changes - basically as the new app templates do   Or for asp core 3 1 templates which use IHostBuilder  not IWebHostBuilder   call ConfigureWebHostDefaults   public static IHostBuilder CreateHostBuilder string   args    gt          Host CreateDefaultBuilder args               ConfigureWebHostDefaults webBuilder   gt                                   add stuff here                 webBuilder UseStartup lt Startup gt

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I Had the same problem that made because I did this in Startup cs class and ConfigureServices method   services AddScoped lt IExamle  Examle gt       But you have to write your Interface in the first and your Class in the second

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From ASP NET Core 3 0  and visual studio 19 version 16 3  You will find section in project  csproj file are like below-     lt PropertyGroup gt       lt TargetFramework gt netcoreapp3 1 lt  TargetFramework gt     lt  PropertyGroup gt    There is no AspNetCoreHostingModel property there  You will find Hosting model selection in the properties of the project  Right-click the project name in the solution explorer  Click properties     Click the Debug menu       Scroll down to find the Hosting Model option     Select Out of Process     Save the project and run IIS Express   UPDATE For Server Deployment   When you publish your application in the server there is a web config file like below     change value of  hostingModel  from  inprocess  to  outofprocess  like below

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Wow  there are a lot of answers on this question  but I had this same issue and my solution was different from anything I read here  and also quite simple  I had been having issues with deploying my app to azure with the right environment settings  so I was messing with the launchsettings json file  and I had changed the value of the ASPNETCORE ENVIRONMENT variable in the IIS profile from  quot Development quot  to  quot Production quot   Changing it back to  quot Development quot  fixed the issue for me     quot profiles quot          quot IIS Express quot            quot commandName quot    quot IISExpress quot          quot launchBrowser quot   true         quot environmentVariables quot              quot ASPNETCORE ENVIRONMENT quot    quot Development quot

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I got this problem when my Azure service was immediately trying to get a secret from Azure KeyVault and I had forgotten to give the service permission by KeyVault

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This publish profile setting fixed for me   Configure Publish Profile -  Settings -  Site Extensions Options  -     x  Install ASP NET Core Site Extension

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In my case  non of above solution worked  But when I removed myproject vspscc file from solution explorer  the problem solved

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With  Net Core 2 2 you should be able to use the InProcess hosting model  since it is naturally faster  everything is processed in IIS  without an extra HTTP-hop between IIS and your app s Kestrel server  One thing you might want to do is add this tag  AspNetCoreModuleV2 Notice the new AspNetCoreModuleV2 vs older AspNetCoreModule option  Another important thing to do is  examine Windows Application Event Log  to identify the culprit  Although error messages there may be cryptic  occasionally  they point to the exact line numbers in the code that caused the failure  Also  in case you use CI CD with TFS  there maybe environment variables in appsettings json file that were not properly replaced with their designated values  and this was one of the exception sources for me

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ASP NET Core 2 2 or later  For a 64-bit  x64  self-contained deployment that uses the in-process hosting model  disable the app pool for 32-bit  x86  processes   In the Actions sidebar of IIS Manager   Application Pools  select Set Application Pool Defaults or Advanced Settings  Locate Enable 32-Bit Applications and set the value to False   Source   https   docs microsoft com en-us aspnet core host-and-deploy iis  view aspnetcore-3 0 create-the-iis-site

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Because the application crashes  For whom saving time on this exception   And the error code says it throws an exception because it can t find a file in the initial phase  See the Environment Settings section  In my scenario  it worked when I changed the following code   var environment   whb GetSetting  environment      to  var environment    Development     whb GetSetting  environment      Because I have appsettings development json but I didn t have appsettings production json  Why it can t find any file because it s looking for different thing on right place

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I just had the same the same issue  It turned out it was a stupid mistake on my side   In the ServiceCollection I tried to register an abstract class  services AddScoped lt IMyInterface  MyClasss gt       where MyClass was abstract for some unknown for me reason hehe      So guys if you got HTTP Error 500 30 - ANCM In-Process Start Failure Just review your ServiceCollection

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I have encounter issue with  net core 3 1  I have tried all the solution but did t work for me  Then I looked into IIS Log   The issue was Application unable to make connection with database because coonection string was invalid  So Please Look into IIS log to find the issue It may be any exception comes at runtime

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Plz see my prev answer in this same thread to understand the whole  Sorry for multiple answers  After further investigation  the issue was happening due to VS 2019 picks the latest patch default behavior of VS  of  net core 2 2 which is 2 2 8 for me to publish the application  We can restrict this to a specific version of choice by using   lt RuntimeFrameworkVersion gt 2 2 4 lt  RuntimeFrameworkVersion gt    See Here  This finally solved my issue even though the latest patch is not applied  I can build from any VS 2017 or VS 2019  both publish the application for  net core 2 2 0 runtime version

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In my case it was database connection problem  This error needs to be more clear  I hope they will do it in the future  Basically it is a problem at ConfigureServices function in Startup  My advise is try to add all lines try catch in ConfigureServices function and you can findout where is problem

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I found another issue that starts out giving the same error message as in the question  I am sharing this here so that before changing the project file you can make sure your services are properly registered   I am also running  netcore 2 2 and was receiving the same error message so  I changed project file from InProcess to OutOfProcess as in the selected answer  After that I found the real cause for my issue when I received    Cannot instantiate implementation type      The cause of this was for me was having    services AddScoped lt IMyService  IMyService gt      instead of   services AddScoped lt IMyService  MyService gt      Related post  Why am I getting the error  quot Cannot instantiate implementation type quot  for my generic service

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i was having same issue in my asp 3 1 core   the error was missing a json dependency file so i had to add it to wwwroot ExternalDependencies in azure

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I had a similar issue when attempting to switch to from OutOfProcess hosting to InProcess hosting on a  Net Core project which I had recently upgraded from 2 0 to 3 0   With no real helpful error to go on and after spending days trying to resolve this  I eventually found a fix for my case which I thought I d share in case it is helpful to anyone else struggling with this   For me  it was caused by a few Microsoft AspNetCore packages   After removing all of the referenced Microsoft AspNetCore packages that had version less than 3 0 0  there was no upgrade available    3 0 0 for these  this error no longer occurred   These were the packages I removed    lt PackageReference Include  Microsoft AspNetCore  Version  2 2 0    gt   lt PackageReference Include  Microsoft AspNetCore App  Version  2 2 8    gt   lt PackageReference Include  Microsoft AspNetCore Server IISIntegration  Version  2 2 1    gt   lt PackageReference Include  Microsoft AspNetCore StaticFiles  Version  2 2 0    gt    All other Microsoft AspNetCore packages with version greater than or equal to 3 0 0 worked fine

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HTTP Error 500 30     ANCM In-Process Start Failure    is moreover a generic error  To know more information about the error Go to Azure Portal  gt  your App Service  gt  under development tools open console  We can run the application through this console and thus visualize the real error that is causing our application not to load  For that put  the name of our project followed by     exe    and press the enter key

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Removing the AspNetCoreHostingModel line in  cproj file worked for me  There wasn t such line in another project of mine which was working fine    lt PropertyGroup gt       lt TargetFramework gt netcoreapp2 2 lt  TargetFramework gt       lt AspNetCoreHostingModel gt InProcess lt  AspNetCoreHostingModel gt   lt  PropertyGroup gt

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When hosting in Amazon Web Services  AWS  using an Elastic Beanstalk  EBS  deployment AND using this stackoverflow answer on how to access configuration values in EBS containers  https   stackoverflow com a 47648283 78804  If NO configuration values have been set within the Elastic Beanstalk - gt  Environments - gt   APP NAME  - gt  Configuration - gt  Software menu  you will probably see this error  Setting ANY SINGLE VALUE in the EBS config  makes it go away  This is probably caused by the configuration-loading block failing to do a null check and the entire website failing un-gracefully because the error is happening during the application Startup phase

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I had a runtime error in Startup cs  Schoolboy error - I made a small tweak to that file  but didn t run my app locally before deploying to Azure  The app didn t startup successfully and I got the 500 30 error page

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In my case  I had a migration which was failing when run on a specific environment in Azure  but running fine in dev  As we have the service configured to run the migrations as part of startup  the actual startup of the web app fails   I ran the migration manually on the environment to discover the problem  then adjusted it to deal with the data differences on that environment   If anyone knows how I could have seen the migration error without manually running in directly on the DB  that would be useful

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In my case I had recently changed a database connection string in my appstettings json file  Without logging or error catching in place I suspect this error wound up causing the  HTTP Error 500 30 - ANCM In-Process Start Failure  error   I happened to notice the exchange between x-freestyler and Tahir Khalid where Tahir suggested an IOC problem in startup  Since my startup had not changed recently but my appstettings json had - I determined that the connection string in my appstettings json was the cause of the problem  I corrected an incorrect connection string and the problem was solved  Thanks to the whole community

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Make sure that your   deps js json file copied correctly to the deployed location

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For me  everything was just fine but the issue was due to publishing by different VS versions  weird      latest VS 2019  16 4 2    When I publish the application with VS 2017 it works fine   The actual issue is in its dependency json file  e g  MyWebApp deps json  in the publish folder  Hope it helps someone

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I looked at the Windows Logs under Application  It displayed the error message and stack trace   I found out I was missing a folder called node modules   I created that folder and that fixed it     I did not make any changes to web config or the project file   My  NETCoreApp version was 3 1

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In ASP NET Core 2 2  a new Server  hosting pattern was released with IIS called IIS InProcess hosting  To enable inprocess hosting  the csproj element AspNetCoreHostingModel is added to set the hostingModel to inprocess in the web config file  Also  the web config points to a new module called AspNetCoreModuleV2 which is required for inprocess hosting   If the target machine you are deploying to doesn t have ANCMV2  you can t use IIS InProcess hosting  If so  the right behavior is to either install the dotnet hosting bundle to the target machine or downgrade to the AspNetCoreModule   Source  jkotalik  Github   Try changing the section in csproj  edit with a text editor      lt PropertyGroup gt       lt TargetFramework gt netcoreapp2 2 lt  TargetFramework gt       lt AspNetCoreHostingModel gt InProcess lt  AspNetCoreHostingModel gt     lt  PropertyGroup gt    to the following        lt PropertyGroup gt       lt TargetFramework gt netcoreapp2 2 lt  TargetFramework gt       lt AspNetCoreHostingModel gt OutOfProcess lt  AspNetCoreHostingModel gt       lt AspNetCoreModuleName gt AspNetCoreModule lt  AspNetCoreModuleName gt    lt  PropertyGroup gt    Source  Github

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In may case it was just a typo which corrupts and prevents parsing of JSON settings file

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All i m going to say in this answer is make sure you uh    don t have anything similar to this in your service registration code           while   Debugger IsAttached                Thread Sleep 500              This totally did not happen to me and definitely did not make me a very sad boy after 3 hours of screwing around with all of the above answers and more

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Download the  NET Core Hosting Bundle installer using the following link   Current  NET Core Hosting Bundle installer  direct download    Run the installer on the IIS server  Restart the server or execute net stop was  y followed by net start w3svc in a command shell

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I encountered this issue on an Azure App Service when upgrading from 2 2 to 3 1  The reason ended up being the  ASP NET Core 2 2  x86  Runtime  Extension was installed on the App Service  Removing that extension from Kudu fixed the issue

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Mine is because of UseKestrel   in program cs It should be  ConfigureKestrel   in 2 2  more info at https   docs microsoft com en-us aspnet core migration 21-to-22 view aspnetcore-2 2 amp tabs visual-studio amp WT mc id -blog-scottha update-kestrel-configuration

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After spending an entire day fighting with myself on deciding to host my asp net core application on IIS with InProcess hosting  i am finally proud and relieved to have this solved  Hours of repeatedly going through the same forums  blogs and SO questions which tried their best to solve the problem  i was still stuck after following all the above mentioned approaches  Now here i will describe my experience of solving it  Step 1  Create a website in IIS Step 2  Make sure the AppPool for the website has  Net CLR version set to  quot No Managed Code quot  and  quot Enable 32-bit Applications quot  property in AppPool - gt  Advanced Settings is set to false Step 3  Make sure your project is referencing  Net core 2 2 Step 4  Add the following line in your startup cs file inside ConfigureServices method services Configure lt IISServerOptions gt  options   gt         options AutomaticAuthentication   false       Step 6  Add the following Nuget packages  Microsoft AspNetCore App v2 2 5 or greater Microsoft AspNetCore Server IIS v2 2 2 or greater  Step 7  Add following line to your  csproj file  lt AspNetCoreHostingModel gt InProcess lt  AspNetCoreHostingModel gt   Step 8  Build and publish your code  preferably x64 bitness  Step 9  Make sure you added your website hostname in etc hosts file Step 10  Restart World Wide Web Publishing Service Now test your asp net core application and it should be hosted using InProcess hosting In order to verify whether your app is hosted using InProcess mode  check the response headers and it should contain the following line Server  Microsoft-IIS 10 0  IIS version could be any depeding on your system  Update  Download and Install ASP Net Core Hosting Bundle which is required for it to work

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In my case it was a wrong value in appsettings json file  The value was   SQLEXPRESS and it worked after i changed it to    SQLEXPRESS

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I had an issue in my Program cs file  I was trying to connect with AddAzureKeyVault that had been deleted long time ago    Conclusion    This error could come to due to any silly error in the application  Debug step by step your application startup process

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Just in case this helps anyone that may have made the same mistake I did  My website has a SSL certificate by Certify the Web  When I published  I deleted the  Well-Known folder and this error came up   Had I not emptied my recycle bin 30 seconds before I figured this out on my virtual machine  I could have just restored the folder  Instead  I re-requested my certificate  restarted that site and the issue was resolved

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For me it was wrongly injected DBContext in HostedService  I rewrote it according to this   How should I inject a DbContext instance into an IHostedService   and all worked fine

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Issue with development server  In my case it was due to SDK version  I have installed all latest updates of VS 2019 but it was not enough  Error happened when I tried to start web application with VS development server  IISExpress Kestrel      So to fix that I just downloaded and installed latest dotNetCore SDK  For that moment it was version 3 1 2  And problem is solved

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I have met this problem because I edit the Program cs and I delete the Run function  Just add it again

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Resolved my issue by running dedicated App Pool for AspNetCoreModuleV2  Description   HTTP Error 500 34 - ANCM Mixed Hosting Models Not Supported   I was running multiple applications under the same App Pool   Some of the applications were running    lt add name  aspNetCore  path     verb     modules  AspNetCoreModule  resourceType  Unspecified    gt    The application causing the error was running  AspNetCoreModuleV2   lt add name  aspNetCore  path     verb     modules  AspNetCoreModuleV2  resourceType  Unspecified    gt    I created a new App Pool dedicated for AspNetCoreModuleV2 and it resolved my issue

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I had the same error and the issue was with Microsoft Extension Primitives version of the package was not compatible with the  net core version  And this was referencing from one of the projects references from my project was referencing    Once I had changed the Microsoft Extension Primitives in that project  This issue got fixed    In the Azure event logs  check what error you are getting and if it is related to a package reference  Try the above thing that I have mentioned   Since nuget packages are tightly coupled with the  net version  Just have to make sure all packages referencing to the project should also be tightly coupled with the  net version

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If you are using Visual Studio  and have any instances of it running  close them all   You should find a  vs sub folder where your  Visual Studio solution   sln file  resides  Delete the  vs folder and try again with the in-process hosting model

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I got the same error on my development machine running Windows 10  The error did not go away after I installed dotnet core hosting bundle  I had to go to Event Viewer to get the detailed error  Your underlying issue  if any  may be different than mine  Point is  if you re on a Windows machine  Event Viewer is there to provide details  Hope this helps someone

[c#] HTTP Error 500.30 - ANCM In-Process Start Failure

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