I've developed an application in .NET 5.0, also, I've a Setup Project to install this application in my clients.
My steps are:
1.- Publish the .NET 5.0 Application.
2.- Compile the Setup project.
3.- Install the setup.exe generated in "2" in the client.
But when I try to install the program in my client, windows says "This installation requires the 5.0.0(x64) version of .NET Desktop Runtime... So I've to download and install the SDK in every client.
My question is: There is some way to avoid this SDK installation? Can I embeed the .NET Desktop Runtime in the .NET 5.0 App or in the Setup Project?
Thanks in advance.
See .NET application publishing overview, specifically publishing a self-contained application. That way all necessary framework files will be included in your application, and you will not the framework to be installed. This will increase the disk requirement a bit if .Net 5 is already installed, since some files will be duplicated.
The alternative is to bundle the the .Net framework installer in your installation script. This will cause the setup-file to be quite a bit larger, unless the script downloads the framework on demand. But it may save some disk space in case there are multiple applications that use .Net 5.
Go on projet Menu/ projetct properties / publish / require components / uncheck you frameWork .
My project fails to build on a build server.
I recently added a new ASP.Net Core (2.2) MVC project with razor pages. The project and the rest of the solution target the .Net Framework 4.7.2.
In Visual Studio on my dev-machine this works fine, but the build server cannot build it. It shows this error.
C:\Users\tfs-build.nuget\packages\microsoft.aspnetcore.razor.design\2.2.0\build\netstandard2.0\Microsoft.AspNetCore.Razor.Design.CodeGeneration.targets(161):C:\Users\tfs-build.nuget\packages\microsoft.aspnetcore.razor.design\2.2.0\build\netstandard2.0\Microsoft.AspNetCore.Razor.Design.CodeGeneration.targets(161,5):
Error : Assembly location for Razor SDK Tasks was not specified. The
most likely cause is an older incompatible version of
Microsoft.NET.Sdk.Razor, or Microsoft.NET.Sdk.Web used by this
project. Please target a newer version of the .NET Core SDK.
I made my coworker install the .Net Core SDK 2.2, since I remembered installing that on the dev-machine to be able to create the project. But this did not help on the buildserver.
What could cause this? Why is the behaviour different from the development environment?
It worked on the build server, after I added this Nuget package:
Microsoft.NET.Sdk.Razor
Since I added the Net.SDK.Razor package, it builds successfully.
I had also added Microsoft.AspNetCore.Razor.Design, but only Microsoft.NET.Sdk.Razor is actually needed.
I want to debug an empty WebApi Project based on .NET Core 2.2.
I installed the "Core 2.2 SDK x86" and changed the target framework to 2.2:
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>netcoreapp2.2</TargetFramework>
</PropertyGroup>
When I started to debug this project, IIS starts, but in the route api/values I see nothing (it loads forever) and I get 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
In my solution WPF and Class Library projects exist. I wanted to make a WebApi for it. Like I said, it's an empty base project generated by Visual Studio 2019. I just installed Core 2.2. Why do I get that error and what am I doing wrong?
I had the same issue.
I ran Program.cs file from the command line and the error message was different.
So, apparently, I didn't have the appropriate .NET Core runtime installed.
You can download it by the following link - https://dotnet.microsoft.com/download
I was facing the same issue!
I updated my Visual Studios to the most recent via the VS Installer.
While updating, I also added the following VS Workloads:
ASP.NET and web development
.NET desktop development
See about workloads here:
https://github.com/MicrosoftDocs/visualstudio-docs/blob/master/docs/install/modify-visual-studio.md
This worked for me! 😊
I did not have to downgrade or remove anything
I had to do a "clean" and "rebuild" of the project and after that it worked again.
I ran with the same problem. But for me it was that my project was running in .NET Core 2.2, which I didn't have installed. I'm using VS 2019.
So for the solution, just go to Visual Studio Installer and for your VS 2019 hit "Modify" like in the following image (it's in spanish though):
Then, click "Individual Components", like
And then, make sure you checked in ".NET Core 2.2 Runtime (EOL)" (and above like .NET Core 3.0, if you want) and click "Modify", as shown
Hope this works for you.
In my case, switching to x64 save the day.
It seems like there are lots of different causes for this. For me, it was because I had upgraded a .csproj file but I hadn't updated the image used in my docker file.
I had same issue after package upgrading. You don't need any vs update.
Just go to
dotnet.microsoft.com/download/dotnet-core/2.2
and get runtime
dotnet-hosting-2.2.7-win.
I had the same error. Remove "Microsoft.AspNetCore.All" from dependencies.
I have downgraded "Microsoft.AspNetCore.App" version and error gone .
Deleting all bin folders of my solution
building everything again did the trick for me
(.NET Core 3.1 VS 2019)
I see many answers like try and error
after searching about the issue, I got the following :
it simply depends on three parameters and they have to be compatible
Windows platform "x86,x64" you can change it from the CPU option of the visual studio
or choose any CPU hence the install .net x framework should be compatible with the windows
The target framework for the project
(check the project target framework "right-click on the project and check target framework") if it is 5 so the enabled in the third parameter should be 5 or change this one but take care you should tell the other team members if you change it
The Enabled framework go for tools and get tools and go for individuals component and chose the target framework the same as found in step 2 and press modify
Faced this issue during xUnit testing. Downgrading nuget package "Microsoft.NET.Test.Sdk" to 15.9.0 worked for me
I got this error because of a Project reference pointing to a project, that did not exist anymore (was removed in merged git-commit). Solved it by right-clicking the project, then Edit Project File, delete the reference and save.
I was trying to run a project that used net core 2.2 but I didn't have it, and there was no error(I had 1.1), so after installing the 2.2 using the "Visual Studio Installer" it worked like a charm. =)
I restarted my Visual Studio instance in Admin mode and I was able to debug.
After closing Visual Studio I can now start in normal mode and debug as expected. I'm not sure what changed though.
I was missing a reference to AWSSDK.Core. After installing the specific version and re-starting VS2019 and rebuilding, the project ran fine.
All of a sudden it stopped working. For me clean solution and re-build solution worked.
I was getting a similar error with my project: The target process exited without raising a CoreCLR started event.
My startup project was targeting multiple frameworks: netstandard2.0;netcoreapp2.2
I fixed this issue by changing my target framework from netstandard2.0 to netcoreapp2.2 using the following stackoverflow directions: How to switch between target frameworks for .NET Core projects in Visual Studio
Be sure to install the exact version of .net core that you want your project to run on
I had this issue and finally tracked it down to doing a "publish" operation with a deployment mode of: "Self contained" That resulted in dropping all .NET runtime binaries in my bin directory. Where I think things got totally messed up is I have several solutions all using that same common bin directory, each build different exe's and dll's.
Only one was for a self contained deployment as a test. I think that started mixing up some of the minor dlls for the .NET core and causing this issue. Once I purged all the dll's that were "not mine" and rebuilt things started working again. I'm using Visual Studio 2019 16.8.2 / .NET Core 3.1
I realize the original question is regarding .NET Core 2.2 but this question comes up first when searching for the main issue.
.Net Core 2.2 is required to be installed. I fixed when I added this in Visual Studio Installer.
VS2019 16.7.1 ASP.Net Core 3.1
Our Nunit test projects that issued this error, only worked with a very select set of Nunit and Microsoft packages.
Microsoft.NET.Test.sdk - 16.5
Nunit - 3.12
Nunit3TestAdapter 3.16.1
But here's the catch, you have to go into
c:\users\yourname\.nuget\packages and look for all three folders shown above. If you find any other version in those folders, delete it.
I found two versions in the Microsoft.NET.Test.SDK folder. I suspect the newer version was being loaded. Why? Because when I deleted it everything ran fine.
A corrupt layout is also possible, had this happen myself. To fix, go to projpath\bin\x64\configtype\AppX, for example:
C:\Users\Foo\Documents\Visual Studio 2019\projectname\bin\x64\Debug\AppX
Delete everything here, rebuild and you're good to go.
Since I don't see it here yet, here's what worked for me. I have a UWP project, Win32 project, and Windows application packaging project in the same solution. Running the Win32 app using FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync was giving this message and not working.
What fixed it was changing a setting in the packaging project's project settings:
Debug -> Debugger type -> Background task process: Native Only
I had same issue. Now in VS2022 you cannot download NetCore2.2.
So just download and install NetCore 2.2 from microsoft dotnet website.
https://dotnet.microsoft.com/en-us/download/dotnet/2.2
This error occurred when I tried changing C# projects in my solution to use Docker and running it:
The error went away when I changed the C# projects back to use the Visual Studio's debug server and running it:
In the Test Explorer window of Visual Studio 2019, make sure that there are no references to any *.testsettings or *.runsettings files if you are not using them intentionally. I had referenced a *.testsettings file unintentionally, and that was causing the issue.
For me, I'd just installed Visual Studio 2022 on a fresh installation of Windows 11. My project uses .Net 5, which wasn't installed by default (I only had .Net 6). I simply used the Visual Studio installer, modified my VS2022, selected Individual Components, and enabled .Net 5. Viola!
I started to get this error after updating Visual Studio from 2019 to 2022. It turned out that the project target framework was set to .Net Core 3.1, which was removed when I uninstalled VS2019, and the solution was to change it to .Net 6.0 which is the component I had selected during installation (Installing .Net Core 3.1 from the Visual Studio Installer should work as well).
To do so, right click on the project name and look for the "Target framework" option (my installation is in Spanish so that's what I presume it should say).
I've encountered this issue multiple times, using VS 2017 and VS 2019 across .NET Core 2.1, 3.1 and 5.0.
There are many conditions that can cause this problem to occur:
Microsoft Update can install a version of .Net Core at any time, automatically and outside of your awareness and knowledge.
It can also change the installation of any .Net Core SDK version's installed components.
Your version of VS has to be compatible with the version of the .Net Core SDK that you have installed.
You must have all of the following components installed for this error to be resolved/pre-empted for .NET 5.0 (please check the dotnet 5.0 site for the compatibility list by versions).
Microsoft .NET SDK 5.0.408 which includes (the following below) must all be installed and listed in the control panel:
.NET Core 5.0.17 Windows Desktop Runtime,.NET Runtime, Windows Server Hosting, Shared Framework
If any .NET Core 3.1 SDK are installed without your knowledge, you must uninstall it and repair your targeted .net core version's installation.
I'm not even sure if what I'm trying to do is possible...
Sample code: here
Basically, I've built a netstandard20 class library which according to the .NET implementation support list should be compatible with a framework461 project (providing you have the .NET Core 2.0 SDK).
I can build the netstandard20 class library no worries and get the DLL back (it's included in the sample code).
This is where the problem starts, when attempting to run msbuild .\netstandard_test.sln to build the framework461 project I get a whole bunch of (what I believe to be misleading) errors about 'netstandard' not being referenced (which it is).
However, if I run dotnet build (or build from VS2017) everything works as expected.
I've tried importing various versions of NetStandard, NetStandard.Library and NetStandard.Library.Framework, as well as referencing Microsoft.DotNet.BuildTools but that didn't appear to help.
Is there any way to build this using msbuild? We have a monolithic build and deployment process and I'd rather not have to change it if it can be avoided. Who knows what else would go wrong!
To build with .NET Core or .NET Standard you need to use the dotnet msbuild command from the .NET Core SDK rather than just plain msbuild.
dotnet msbuild .\netstandard_test.sln /p:Configuration=Release
This will also work with .NET Framework 4.6.1 (and older versions).
Do note that Microsoft has provided install scripts to make installing the .NET Core SDK painless on continuous integration servers.
You need to use a recent 15.* version (currently 15.5.*) of MSBuild and make sure that the "Cross platform development" workload is installed in visual studio. This adds the required components to locate the .NET Core SDK, which contains MSBuild SDKs like Microsoft.NET.Sdk or Microsoft.NET.Sdk.Web used by .NET Standard and .NET Core projects.
You can then use msbuild from the developer command prompt to build these projects. I suggest adding /restore (msbuild >= 15.5.*) to make sure that a NuGet restore happened for sdk-based projects.
Since VS 2017 does not install a "global" version of MSBuild, be sure to use the version of MSBuild installed in the VS 2017 folders (check with msbuild /version or where msbuild).
dotnet msbuild has limitations when you use .resx files containing file references or non-string properties. Also, it does not support COM references or building strong named assemblies. If you need any of these features, use msbuild (VS 2017) over dotnet msbuild (.NET Core CLI)