How to fix error code 2147516556 (0x8000808c) in VS 2022

Manfred Koh 0

Reference Library uses .NET 8.0, which I configured it as such.

Build is successful but Debugger shows below error and program failed to open.

The target process exited without raising a CoreCLR started event. 
Ensure that the target process is configured to use .NET Core. 
This may be expected if the target process did not run on .NET Core. 
The program '[Redacted]' has exited with code 2147516556 (0x8000808c).

Attached Image are installed Runtimes & SDKs.

Muhammad Usama 0 Reputation points

2024-07-24T07:24:53.5966667+00:00
To fix error code 2147516556 (0x8000808c) in Visual Studio 2022, try these steps:

Update Visual Studio: Go to Help > Check for Updates.

Repair Visual Studio: Open Visual Studio Installer, select your version, and click More > Repair.

Reset Settings: Go to Tools > Import and Export Settings > Reset all settings.

Check Environment Variables: Ensure they are correctly set in Control Panel > System > Advanced system settings > Environment Variables.

Disable Extensions: Go to Extensions > Manage Extensions and disable any suspicious extensions.

Clear Component Cache: Delete %LocalAppData%\Microsoft\VisualStudio\<version>\ComponentModelCache contents.

Run as Administrator: Right-click Visual Studio shortcut and select Run as administrator.

Reinstall Visual Studio: Uninstall via Visual Studio Installer, restart your computer, and reinstall from the official website.

2 answers

Jiachen Li-MSFT 30,851 Reputation points Microsoft Vendor

2024-07-24T03:20:08.6466667+00:00

Hi @Manfred Koh ,

Ensure that your project is configured to use .NET 8.0.

Open the csproj file (.) and check the target framework <TargetFramework>net8.0</TargetFramework>.

Confirm that the platform (x86, x64, or ARM) and architecture (Debug or Release) settings match between your project and the target process.

Make sure all dependencies and NuGet packages are correctly installed, clean the solution and rebuild it.

Best Regards.

Jiachen Li

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Manfred Koh 0 Reputation points

2024-07-24T06:10:29.2+00:00

Hi,

As mentioned above, it is configured as per below code block.

<PropertyGroup> <OutputType>WinExe</OutputType> <TargetFramework>net8.0-windows10.0.22000.0</TargetFramework> <UseWindowsForms>true</UseWindowsForms> <Platforms>x64</Platforms> <GenerateAssemblyInfo>false</GenerateAssemblyInfo> <RootNamespace>DNET</RootNamespace> <AssemblyName>[REDACTED]</AssemblyName> </PropertyGroup>

My .NET version is 8.0 Plus, here's all the runtimes and SDKs I have installed

still getting this error

The target process exited without raising a CoreCLR started event. Ensure that the target process is configured to use .NET Core. This may be expected if the target process did not run on .NET Core. The program '[44996] [REDACTED].exe' has exited with code 2147516556 (0x8000808c).

Jiachen Li-MSFT 30,851 Reputation points Microsoft Vendor

2024-07-24T07:55:59.2833333+00:00

Hi @Manfred Koh ,

Make sure your Visual Studio is updated to the latest version.

Ensure there is no global.json file in your project directory or any parent directory that might be specifying an older SDK version. If there is one, either update it to the correct version or remove it.

Manfred Koh 0 Reputation points

2024-07-24T09:37:24.5666667+00:00

There's no global.json file in the project.

My VS is up to date as i updated it few days ago.

I also checked via installer and help.

I also cleared Component Cache from %LocalAppData%\Microsoft\VisualStudio\17\ComponentModelCache.

I restarted VS after clearing Component Cache.

Manfred Koh 0 Reputation points

2024-07-24T11:36:43.9+00:00

Is there any other fixes that can be done

Manfred Koh 0 Reputation points

2024-07-24T11:56:50.4533333+00:00

This is also happening in just one project, the other project works fine without this error.

Manfred Koh 0 Reputation points

2024-07-24T16:02:27.83+00:00

OK, I referenced another project that uses .NET Runtime 4.8.1

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Manfred Koh 0 Reputation points

2024-07-24T16:25:49.6666667+00:00

For more context, I get the same error as original post..

The target process exited without raising a CoreCLR started event. Ensure that the target process is configured to use .NET Core. This may be expected if the target process did not run on .NET Core. The program '[REDACTED].exe' has exited with code 2147516556 (0x8000808c).

when I debug DNET Project with the reference project as per image below.

However, I get a different error as per in box below.

System.IO.FileNotFoundException: Could not load file or assembly: 'P:\Coding Projects\C#\[REDACTED]\source\.. ..\[REDACTED]\DNET\bin\x64\Debug\net8.0-windows10.0.22000.0\F3BC4DNI.DLL'. The specified module could not be found.

If I were to remove it as per below image

Bruce (SqlWork.com) 63,666 Reputation points

2024-07-24T20:08:13.6433333+00:00

are you sure F3BC4DNI.DLL is a .netstandard 2.0 or .net8 module? my guess is that the dll is or references a .net 4.* framework dll. this is not supported.

Manfred Koh 0 Reputation points

2024-07-24T20:22:18.3433333+00:00

that DLL is based on .NET 8.0 as per the hex editor

2e 4e 45 54 20 38 2e 30 = hex for .NET 8.0

Refer to image as it shows .NET in the DLL
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How to fix error code 2147516556 (0x8000808c) in VS 2022

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