Microsoft Visual Studio 2019: The project file cannot be opened. Unable to locate the .NET SDK - c#

I just upgraded my visual studio 2019 to latest version 16.8.3 and suddenly I am not able to load any C# project and getting the following error for all .NET core projects:
The project file cannot be opened. Unable to locate the .NET SDK.
Check that it is installed and that the version specified in
global.json (if any) matches the installed version.

Try to edit envrionment Variables.
Right click on This PC -> Properties -> Advanced System Settings -> Advanced -> Environment Variables -> System Variables
Add [install path] C:\Program Files\dotnet\ to the variable path.
Restart visual studio.
If it does not solve this problem, you can refer to this answer.

I found that the path C:\Program Files\dotnet was already in my path but it was ordered below the C:\Program Files (x86)\dotnet entry. By simply moving C:\Program Files\dotnet above C:\Program Files (x86)\dotnet in the list and restarting Visual Studio cleared up the problem.

If there is a global.json file in your solution folder(where *.sln file reside), delete this.

In my case, I had .NET 6 preview but then uninstalled it. After uninstalling, some of my projects won't load. I have all the configurations mentioned above but still won't load the projects. I went to C:\Program Files\dotnet\sdk\ where I found that there still exist a .NET 6 folder which is empty. Deleting that empty .NET 6 folder fixes the issue and I was able to load my projects.

This works for me...
Check first if which .net Core SDK is available in the system.
Step 1: Open Command prompt (CMD) and type dotnet --info
The above image shows no SDK is installed or register
Step 2: Install SDK from https://dotnet.microsoft.com/download/dotnet-core
Done Visual studio works like charm... Verify if its properly installed and register
Above image you can see .net core SDK is registered properly on the system.

I had a similar situation upgrading from VS 2019 to VS 2022, trying to run a dotnet 5.0 solution from VS 2022 (that starts to use dotnet 6.0).
In the PATH env. variable I had both 'C:\Program Files\dotnet' and 'C:\Program Files (x86)\dotnet'. I removed the (x86) one and stopped having that error

Installing missed SDK that the project has built solved the problem
I had a similar issue when I tried to build a net5.0 solution that is not installed on my machine.
In my case, I had VS 2022, and net6.0 installed.
Installing net5.0 SDK solved the problem.
I had only C:\Program Files\dotnet in Path env

I just carefully followed the error message and tried to resolve the problem.
I got below error message:
F:\mypath\ServerlessFunc\ServerlessFunc\ServerlessFunc.csproj : error
: The project file cannot be opened. C:\Program
Files\dotnet\sdk\6.0.402\Sdks\Microsoft.NET.Sdk\Sdk not found. Check
that a recent enough .NET SDK is installed and/or increase the version
specified in global.json.
I then tried to navigate through
C:\Program Files\dotnet\sdk\6.0.402\Sdks\Microsoft.NET.Sdk\Sdk
path which was mentioned in the above error and found that the above path does not exist. This problem could be resolved if I install SDK of version of 6.0. Rather I started using VS-2022.

Related

Why can't I compile any of my old or new project? [duplicate]

I just upgraded my visual studio 2019 to latest version 16.8.3 and suddenly I am not able to load any C# project and getting the following error for all .NET core projects:
The project file cannot be opened. Unable to locate the .NET SDK.
Check that it is installed and that the version specified in
global.json (if any) matches the installed version.
Try to edit envrionment Variables.
Right click on This PC -> Properties -> Advanced System Settings -> Advanced -> Environment Variables -> System Variables
Add [install path] C:\Program Files\dotnet\ to the variable path.
Restart visual studio.
If it does not solve this problem, you can refer to this answer.
I found that the path C:\Program Files\dotnet was already in my path but it was ordered below the C:\Program Files (x86)\dotnet entry. By simply moving C:\Program Files\dotnet above C:\Program Files (x86)\dotnet in the list and restarting Visual Studio cleared up the problem.
If there is a global.json file in your solution folder(where *.sln file reside), delete this.
In my case, I had .NET 6 preview but then uninstalled it. After uninstalling, some of my projects won't load. I have all the configurations mentioned above but still won't load the projects. I went to C:\Program Files\dotnet\sdk\ where I found that there still exist a .NET 6 folder which is empty. Deleting that empty .NET 6 folder fixes the issue and I was able to load my projects.
This works for me...
Check first if which .net Core SDK is available in the system.
Step 1: Open Command prompt (CMD) and type dotnet --info
The above image shows no SDK is installed or register
Step 2: Install SDK from https://dotnet.microsoft.com/download/dotnet-core
Done Visual studio works like charm... Verify if its properly installed and register
Above image you can see .net core SDK is registered properly on the system.
I had a similar situation upgrading from VS 2019 to VS 2022, trying to run a dotnet 5.0 solution from VS 2022 (that starts to use dotnet 6.0).
In the PATH env. variable I had both 'C:\Program Files\dotnet' and 'C:\Program Files (x86)\dotnet'. I removed the (x86) one and stopped having that error
Installing missed SDK that the project has built solved the problem
I had a similar issue when I tried to build a net5.0 solution that is not installed on my machine.
In my case, I had VS 2022, and net6.0 installed.
Installing net5.0 SDK solved the problem.
I had only C:\Program Files\dotnet in Path env
I just carefully followed the error message and tried to resolve the problem.
I got below error message:
F:\mypath\ServerlessFunc\ServerlessFunc\ServerlessFunc.csproj : error
: The project file cannot be opened. C:\Program
Files\dotnet\sdk\6.0.402\Sdks\Microsoft.NET.Sdk\Sdk not found. Check
that a recent enough .NET SDK is installed and/or increase the version
specified in global.json.
I then tried to navigate through
C:\Program Files\dotnet\sdk\6.0.402\Sdks\Microsoft.NET.Sdk\Sdk
path which was mentioned in the above error and found that the above path does not exist. This problem could be resolved if I install SDK of version of 6.0. Rather I started using VS-2022.

Intellisense not working in VSCode - OmniSharp Error

Intellisense has stopped working for me and whenever I run VSCode this error comes up in the OmniSharp Log.
[warn]: OmniSharp.MSBuild.ProjectManager
Failed to load project file '/Users/leogaunt/Documents/Programming/Unity/Cube Stack/Assembly-CSharp.csproj'.
/Users/leogaunt/Documents/Programming/Unity/Cube Stack/Assembly-CSharp.csproj
/Users/leogaunt/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks
[fail]: OmniSharp.MSBuild.ProjectManager
Attempted to update project that is not loaded: /Users/leogaunt/Documents/Programming/Unity/Cube Stack/Assembly-CSharp.csproj
I have tried re-installing the plugin, and re-intsalling VSCode but it hasn't worked.
I know I have .NET Core installed as I am a Mac user and I know this because when I type dotnet --version in terminal it outputs:
3.1.401
I am programming in Unity and am creating a game for iOS.
Change the mono path to always, in C# extension config.
For anyone that uses VSCode v1.67.2 dotnet v3.x.x and OmniSharp v1.25.0 (or v1.23.17 and above).
The above accepted answer does not solve the issue.
The simplest thing to do is downgrade ms-dotnettools.csharp (C# Extension), the only issue is if you downgrade to any version above v1.23.16 it gives you "Can't install 'ms-dotnettools.csharp' extension because it is not compatible with the current version of Visual Studio Code (version 1.67.2)"
I suggest to downgrade it to version 1.23.16 and restart vscode.
Your Intellisense should start working.
My Environment
dotnet v3.1.417
VSCode v1.67.2
C# Extension v1.25.0 (now downgraded to v1.23.16)
Running in Remote Container on a Mac host.
Yes I am using 3+ year old dotnet version. It's a legacy software, it happens, everyone has skeletons in their systems ;)
Trust me it'll work, tried everything and then came to this
Go into VS code Preferences
Search for omnisharp.path and click on edit in settings.json
Add/edit line "omnisharp.path": "latest" (remember to add a comma at the end of the previous line)
Go back into settings and search omnisharp, scroll down till you find Use Global Mono, change that to Always
After this you will have to download Mono, mac's mono download link is this https://www.mono-project.com/download/stable/#download-mac
After the download finishes, set it up by opening the download file
Go back to settings.json and add mono's /bin path as "omnisharp.monoPath": "/Library/Frameworks/Mono.framework/Versions/6.12.0/bin" which is the default download path for mac, if you wanna confirm this, go into mac's disk space and then follow the above mentioned path)
Finally restart VS Code and it should work (in case it still doesn't, restart it again)
I downgraded the VS Code's C# extension to 1.24.3 from 1.25.0 and it worked.
I had the same Problem after fetching Unity from a git repository.
For me it worked to reset the .Net Version in Unity.
Edit -> Project Settings -> Api Compatibility Level
Switched that back and forth, restarted VSCode. The .csproj-file will file out all the missing dlls.
I solved this by uninstalling all SDK's and installed the older 4.7.1, then everything worked instantly.
I had the same problem. Here's how I fixed it:
I added all projects to the solution file (dotnet sln add <project name>) and opened the project in vs code by passing the path to vscode from terminal
(code <project path>).
The error says that OmniSharp is looking for Version=v4.7.1. You may want to install the latest version of it.

Visual Studio 2019 shows an empty solution after creating a .NET Core project

When I create a new .NET Core project in Visual Studio 2019, it shows only the solution file. Other files are not showing and also I am not able to debug or the project.
I've also run into this problem and after two days of searching forums and reading .NET documentations, I finally managed to find the solution.
The problem is that Visual Studio cannot find the proper SDK version. There might be a few reasons for this, but first of all, check if you have any SDK installed:
Open the Command Prompt:
Start Menu > Visual Studio 2019 > Developer Command Prompt for Visual Studio 2019
Run the command: dotnet --info
Case 1:
The .NET SDKs installed: section says that you have no SDKs installed.
-OR-
A .NET SDK is installed but not for the right architecture (this was my case), meaning that you had installed x86 version instead of x64.
Solution:
Uninstall all versions of .NET Core SDKs and Runtimes, then download and install the latest x64 SDK and Runtime version from Microsoft's webpage.
Case 2:
A .NET SDK is installed but the referenced SDK version in the current project's .csproj file does not match the installed version nor the one specified in the global.json (if exists).
Solution: Edit the .csproj file, so that the SDK versions match.
If you have or need a global.json file, make sure you set its content properly. You can read more about it here.
Finally
Don't forget to open Visual Studio, create a new e.g. Console Application and see if the Solution's files appear in the Solution Explorer window (they should). Note that existing projects may still not be working properly because their .csproj file might have wrong SDK reference - if so, you have to fix them manually.

Can't open or create .NET CORE Web Apps after VS 2K17 Update

I had a previously created web API running under .net core 1.1 and recently I installed .NET Core 2.0. Tired of trying to fix the problem by searching I decided to create a new project running under 2.0 just to realize it does not work either. Had a global.json pointing to 1.0 preview3 two directories upward which I deleted but didn't make a difference. Thanks in advance for any attempt of help provided.
Error presented:
The SDK 'Microsoft.NET.Sdk.Web' specified could not be found"
Running "dotnet --info" on cmd gives me version 2.0.0
Path variables defined (in this order)
C:\Program Files\dotnet\sdk
C:\Program Files (x86)\Microsoft VS Code\bin
C:\Users\FILENGA\AppData\Roaming\npm
%USERPROFILE%\AppData\Local\Microsoft\WindowsApps
Try setting a
global.json
file in the root of your repo setting appropriate SDK.
{
"sdk": {
"version": "1.0.4"
}
}
Then run
dotnet --info
again. If it doesn't say 1.0.4 it isn't correctly taking it.
Make sure you have no other global.json files in the rest of your repo
I had a similar issue and that fixed it. See here
Problem solved. Previous version of VS 2K17 saved projects in a directory other than the most recent. Just had to move old projets to new folder.
I was running into the same issue. I ended up moving c:\program files\dotnot up in my path and it fixed the problem.

Visual Studio 2017 Enterprise Add Unit Test project throws Package Installation Error

I have a solution with projects pointing to .Net Framework 4.5 which I have opened in Visual Studio 2017 and tried to Unit Test Project pointing to .Net Framework 4.5. I am getting the following error
Package Installation error .
Could not add all required packages to the project. The following packages failed to install from 'C:\Program Files(x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\Extensions\502SXCIF.E5I\Packages':
MSTest.TestFramework.1.1.11: Failed to add reference to 'Microsoft.VisualStudio.TestPlatform.TestFramework'
I have tried changing the Platform to x86 as suggested on some online resources.
I am using a Windows 7 Enterprise 64 bit. Has anyone been able to resolve this.
MsUnit test related template got missed in your local system.if you have another version please try to copy respective folder it will resolve the issue.

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