Dotnet Quit Unexpectedly Visual Studio For Mac



27 dotnet 0xd51052 0x104d44000 + 53330 28 dotnet 0xd51645 0x104d44000 + 54853 29 libdyld.dylib 0x00007fff5b64c3d5 start + 1. SOLVED: Fixed the problem by reinstalling VS Code and the C# extension. I've used Visual Studio Code for few days now to edit my scripts. VSCode was working, before VSCode updates.

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Over time, as you install updated versions of the .NET runtime and SDK, you may want to remove outdated versions of .NET from your machine. Removing older versions of the runtime may change the runtime chosen to run shared framework applications, as detailed in the article on .NET version selection.

Should I remove a version?

The .NET version selection behaviors and the runtime compatibility of .NET across updates enables safe removal of previous versions. .NET runtime updates are compatible within a major version band such as 1.x and 2.x. Additionally, newer releases of the .NET SDK generally maintain the ability to build applications that target previous versions of the runtime in a compatible manner.

In general, you only need the latest SDK and latest patch version of the runtimes required for your application. Instances where you might want to keep older SDK or runtime versions include maintaining project.json-based applications. Unless your application has specific reasons for earlier SDKs or runtimes, you may safely remove older versions.

Determine what is installed

The .NET CLI has options you can use to list the versions of the SDK and runtime that are installed on your machine. Use dotnet --list-sdks to see the list of SDKs installed on your machine. Use dotnet --list-runtimes to see the list of runtimes installed on your machine. For more information, see How to check that .NET is already installed.

Uninstall .NET

.NET uses the Windows Apps & features dialog to remove versions of the .NET runtime and SDK. The following figure shows the Apps & features dialog. You can search for core sdk or .net sdk to filter and show installed versions of .NET.

Select any versions you want to remove from your machine and click Uninstall.

There are more options to uninstall .NET (either SDK or runtime) on Linux. The best way for you to uninstall .NET is to mirror the action you used to install .NET. The specifics depend on your chosen distribution and the installation method.

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Important

For Red Hat installations, consult the Red Hat Product Documentation for .NET.

Dotnet

There's no need to uninstall the .NET SDK when upgrading it using a package manager, unless you're upgrading from a preview version. The package manager update or refresh commands will automatically remove the older version upon the successful installation of a newer version. If you have a preview version installed, uninstall it.

If you installed .NET using a package manager, use that same package manager to uninstall the .NET SDK or runtime. .NET installations support most popular package managers. Consult the documentation for your distribution's package manager for the precise syntax in your environment:

  • apt-get(8) is used by Debian based systems, including Ubuntu.
  • yum(8) is used on Fedora, CentOS, and Oracle Linux.
  • zypper(8) is used on openSUSE and SUSE Linux Enterprise System (SLES).
  • dnf(8) is used on Fedora.

In almost all cases, the command to remove a package is remove.

The package name for the .NET SDK installation for most package managers is dotnet-sdk, followed by the version number. Starting with the version 2.1.300 of the .NET SDK and version 2.1 of the runtime, only the major and minor version numbers are necessary: for example, the .NET SDK version 2.1.300 can be referenced as the package dotnet-sdk-2.1. Prior versions require the entire version string: for example, dotnet-sdk-2.1.200 would be required for version 2.1.200 of the .NET SDK.

For machines that have installed only the runtime, and not the SDK, the package name is dotnet-runtime-<version> for the .NET runtime, and aspnetcore-runtime-<version> for the entire runtime stack.

Tip

.NET Core installations earlier than 2.0 didn't uninstall the host application when the SDK was uninstalled using the package manager. Using apt-get, the command is:

There's no version attached to dotnet-host.

If you installed using a tarball, you must remove .NET using the manual method.

On Linux, you must remove the SDKs and runtimes separately, by removing the versioned directories. Removing them deletes the SDK and runtime from disk. For example, to remove the 1.0.1 SDK and runtime, you would use the following bash commands:

The parent directories for the SDK and runtime are listed in the output from the dotnet --list-sdks and dotnet --list-runtimes command, as shown in the earlier table.

On Mac, you must remove the SDKs and runtimes separately, by removing the versioned directories. Removing them deletes the SDK and runtime from disk. For example, to remove the 1.0.1 SDK and runtime, you would use the following bash commands:

The parent directories for the SDK and runtime are listed in the output from the dotnet --list-sdks and dotnet --list-runtimes command, as shown in the earlier table.

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.NET Uninstall Tool

The .NET Uninstall Tool (dotnet-core-uninstall) lets you remove .NET SDKs and runtimes from a system. A collection of options is available to specify which versions should be uninstalled.

Visual Studio dependency on .NET Core SDK versions

Before Visual Studio 2019 version 16.3, Visual Studio installers called the standalone .NET Core SDK installer. As a result, the SDK versions appear in the Windows Apps & features dialog. Removing .NET Core SDKs that were installed by Visual Studio using the standalone installer may break Visual Studio. If Visual Studio has problems after you uninstall SDKs, run Repair on that specific version of Visual Studio. The following table shows some of the Visual Studio dependencies on .NET Core SDK versions:

Visual Studio version.NET Core SDK version
Visual Studio 2019 version 16.2.NET Core SDK 2.2.4xx, 2.1.8xx
Visual Studio 2019 version 16.1.NET Core SDK 2.2.3xx, 2.1.7xx
Visual Studio 2019 version 16.0.NET Core SDK 2.2.2xx, 2.1.6xx
Visual Studio 2017 version 15.9.NET Core SDK 2.2.1xx, 2.1.5xx
Visual Studio 2017 version 15.8.NET Core SDK 2.1.4xx

Starting with Visual Studio 2019 version 16.3, Visual Studio is in charge of its own copy of the .NET SDK. For that reason, you no longer see those SDK versions in the Apps & features dialog.

Remove the NuGet fallback folder

Before .NET Core 3.0 SDK, the .NET Core SDK installers used a folder named NuGetFallbackFolder to store a cache of NuGet packages. This cache was used during operations such as dotnet restore or dotnet build /t:Restore. The NuGetFallbackFolder is located at C:Program Filesdotnetsdk on Windows and at /usr/local/share/dotnet/sdk on macOS.

You may want to remove this folder, if:

  • You're only developing using .NET Core 3.0 SDK or .NET 5.0 or later versions.
  • You're developing using .NET Core SDK versions earlier than 3.0, but you can work online.

If you want to remove the NuGet fallback folder, you can delete it, but you'll need admin privileges to do so.

It's not recommended to delete the dotnet folder. Doing so would remove any global tools you've previously installed. Also, on Windows:

  • You'll break Visual Studio 2019 version 16.3 and later versions. You can run Repair to recover.
  • If there are .NET Core SDK entries in the Apps & features dialog, they'll be orphaned.
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This article focuses on common errors when restoring packages and steps to resolve them.

Package Restore tries to install all package dependencies to the correct state matching the package references in your project file (.csproj) or your packages.config file. (In Visual Studio, the references appear in Solution Explorer under the Dependencies NuGet or the References node.) To follow the required steps to restore packages, see Restore packages. If the package references in your project file (.csproj) or your packages.config file are incorrect (they do not match your desired state following Package Restore), then you need to either install or update packages instead of using Package Restore.

If the instructions here do not work for you, please file an issue on GitHub so that we can examine your scenario more carefully. Do not use the 'Is this page helpful?' control that may appear on this page because it doesn't give us the ability to contact you for more information.

Quick solution for Visual Studio users

If you're using Visual Studio, first enable package restore as follows. Otherwise continue to the sections that follow.

  1. Select the Tools > NuGet Package Manager > Package Manager Settings menu command.
  2. Set both options under Package Restore.
  3. Select OK.
  4. Build your project again.

These settings can also be changed in your NuGet.config file; see the consent section. If your project is an older project that uses the MSBuild-integrated package restore, you may need to migrate to automatic package restore.

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This project references NuGet package(s) that are missing on this computer

Complete error message:

This error occurs when you attempt to build a project that contains references to one or more NuGet packages, but those packages are not presently installed on the computer or in the project.

  • When using the PackageReference management format, this error might be a leftover from a packages.config to PackageReference migration and needs to be manually removed from the project file.
  • When using packages.config, the error means that the package is not installed in the packages folder at the solution root.

This situation commonly occurs when you obtain the project's source code from source control or another download. Packages are typically omitted from source control or downloads because they can be restored from package feeds like nuget.org (see Packages and source control). Including them would otherwise bloat the repository or create unnecessarily large .zip files.

The error can also happen if your project file contains absolute paths to package locations, and you move the project.

Use one of the following methods to restore the packages:

  • If you've moved the project file, edit the file directly to update the package references.
  • Visual Studio (automatic restore or manual restore)

After a successful restore, the package should be present in the global-packages folder. For projects using PackageReference, a restore should recreate the obj/project.assets.json file; for projects using packages.config, the package should appear in the project's packages folder. The project should now build successfully. If not, file an issue on GitHub so we can follow up with you.

Assets file project.assets.json not found

Complete error message:

The project.assets.json file maintains a project's dependency graph when using the PackageReference management format, which is used to make sure that all necessary packages are installed on the computer. Because this file is generated dynamically through package restore, it's typically not added to source control. As a result, this error occurs when building a project with a tool such as msbuild that does not automatically restore packages.

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In this case, run msbuild -t:restore followed by msbuild, or use dotnet build (which restores packages automatically). You can also use any of the package restore methods in the previous section.

One or more NuGet packages need to be restored but couldn't be because consent has not been granted

Complete error message:

This error indicates that package restore is disabled in your NuGet configuration.

You can change the applicable settings in Visual Studio as described earlier under Quick solution for Visual Studio users.

You can also edit these settings directly in the applicable nuget.config file (typically %AppData%NuGetNuGet.Config on Windows and ~/.nuget/NuGet/NuGet.Config on Mac/Linux). Make sure the enabled and automatic keys under packageRestore are set to True:

Unexpectedly

Important

If you edit the packageRestore settings directly in nuget.config, restart Visual Studio so that the options dialog box shows the current values.

Other potential conditions

  • You may encounter build errors due to missing files, with a message saying to use NuGet restore to download them. However, running a restore might say, 'All packages are already installed and there is nothing to restore.' In this case, delete the packages folder (when using packages.config) or the obj/project.assets.json file (when using PackageReference) and run restore again. If the error still persists, use nuget locals all -clear or dotnet nuget locals all --clear from the command line to clear the global-packages and cache folders as described on Managing the global packages and cache folders.

  • When obtaining a project from source control, your project folders may be set to read-only. Change the folder permissions and try restoring packages again.

  • You may be using an old version of NuGet. Check nuget.org/downloads for the latest recommended versions. For Visual Studio 2015, we recommend 3.6.0.

If you encounter other problems, file an issue on GitHub so we can get more details from you.