VS2015 - 'NuGetPackage' 包未正确加载

Question

刚刚打开 VS 2015 Enterprise RTM，打开一个现有的工作项目，出现以下错误：

Microsoft Visual Studio

The 'NuGetPackage' package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file C:\Users\REDACTED\AppData\Roaming\Microsoft\VisualStudio.0\ActivityLog.xml.

Restarting Visual Studio could help resolve this issue.

Continue to show this error message?

[Yes] [No]

重新启动没有帮助。我检查了日志文件，发现以下与 nuget 相关的部分：

<entry>
  <record>555</record>
  <time>2015/07/20 16:06:34.364</time>
  <type>Error</type>
  <source>Extension Manager</source>
  <description>Extension will not be loaded because an extension with the same ID 
     &apos;Microsoft.Dev14.VsixTemplatesPackage.443cca91-ec20-41e5-a165-f28e56b89650&apos; 
     is already loaded at C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\
     EXTENSIONS\G2URSPAC.VAZ\...</description>
  <path>C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\EXTENSIONS\
     NUGETIFIEDEXTENSIBILITYTEMPLATES\</path>
</entry>
<entry>
  <record>556</record>
  <time>2015/07/20 16:06:34.364</time>
  <type>Error</type>
  <source>Extension Manager</source>
  <description>Extension will not be loaded because an extension with the same ID
     &apos;Microsoft.VisualStudio.TeamFoundation.TeamExplorer.Extensions&apos; is already
     loaded at C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\EXTENSIONS\
     B1NUOYPH.H2N\...</description>
  <path>C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\COMMONEXTENSIONS\
     MICROSOFT\TEAMFOUNDATION\TEAM EXPLORER\</path>
</entry>

这会建议重复扩展，但在扩展管理器中似乎并非如此。

这是在一台也安装了 VS2013 的机器上。它从未安装过任何 preview/RC 版本的 VS2015。

Answer 1

通过扩展和更新完全删除 NuGet，重新启动 VS，然后通过扩展和更新重新安装 NuGet 为我解决了这个问题。无需重新安装完整的 VS。

Answer 2

我遇到了同样的问题，并使用已经提到的解决方案解决了它，但需要更多尝试。卸载并安装 NuGetPackage 扩展后必须完全重启 VS，在我的系统上它无法正常工作，直到我关闭打开的解决方案。希望 NuGetPackage 扩展在不久的将来变得更加稳定。

Answer 3

将 Nuget 更新到最新版本似乎已经解决了问题。

工具 > 扩展和更新
更新 > Visual Studio 图库
单击“Nuget 包管理器”选项上的更新

Answer 4

从 MSDN 网站完全干净地安装 Visual Studio Professional 2015 后，我运行 VS2015 作为管理员，从 Tools -> NuGet Package Manager... -> Package Manager Console 打开程序包管理器控制台，我收到此错误:

"Windows PowerShell updated your execution policy successfully, 
but the setting is overridden by a policy defined at a more 
specific scope. Due to the override, your shell will retain its 
current effective execution policy of Unrestricted. 
Type "Get-ExecutionPolicy -List" to view your execution policy 
settings. For more information please see "Get-Help Set-ExecutionPolicy"

按照上述步骤

1) 使用Tools -> Extensions and Updates...卸载NuGet Package Manager for Visual Studio 2015.

2) 重启Visual Studio.

3) 使用Tools -> Extensions and Updates... 重新安装 NuGet Package Manager for Visual Studio 2015.

4) 重启Visual Studio.

现在，当我打开程序包管理器控制台时，Powershell 会正确加载并且一切正常。非常感谢！

Answer 5

删除此文件夹中的所有文件 C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\imf5jbeu.eak 似乎对我有用。

Answer 6

将带有 nuget 包的项目从 Vx20XX 升级到 VS2015 时，您可能会遇到 nuget 包问题。

错误消息示例：此项目引用了此计算机上缺少的 NuGet 包。启用 NuGet 包还原以下载它们。有关详细信息，请参阅 http://go.microsoft.com/fwlink/?LinkID=322105。

我写了一个小程序解决了我的问题 MSBuild-Integrated package restore vs. Automatic Package Restore

您可以下载该工具的可执行文件here。

请告诉我结果:-) !

参考代码：

<Window x:Class="FixNuGetProblemsInVs2015.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:FixNuGetProblemsInVs2015"
        mc:Ignorable="d"
        Title="Fix NuGet Packages problems in Visual Studio 2015 (By Eric Ouellet)" Height="350" Width="525">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"></ColumnDefinition>
            <ColumnDefinition Width="10"></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>

        <TextBlock Grid.Row="0" Grid.Column="0">Root directory of projects</TextBlock>
        <Grid Grid.Row="0" Grid.Column="2">
            <Grid.ColumnDefinitions>
                <ColumnDefinition></ColumnDefinition>
                <ColumnDefinition Width="Auto"></ColumnDefinition>
            </Grid.ColumnDefinitions>

            <TextBox Grid.Column="0" Name="DirProjects"></TextBox>
            <Button Grid.Column="1" VerticalAlignment="Bottom" Name="BrowseDirProjects" Click="BrowseDirProjectsOnClick">Browse...</Button>
        </Grid>

        <!--<TextBlock Grid.Row="1" Grid.Column="0">Directory of NuGet Packages</TextBlock>
        <Grid Grid.Row="1" Grid.Column="2">
            <Grid.ColumnDefinitions>
                <ColumnDefinition></ColumnDefinition>
                <ColumnDefinition Width="Auto"></ColumnDefinition>
            </Grid.ColumnDefinitions>

            <TextBox Grid.Column="0" Name="DirPackages"></TextBox>
            <Button Grid.Column="1"  Name="BrowseDirPackages" Click="BrowseDirPackagesOnClick">Browse...</Button>
        </Grid>-->

        <TextBox Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="3" Name="TxtLog" IsReadOnly="True"></TextBox>

        <Button Grid.Row="3" Grid.Column="0" Click="ButtonRevertOnClick">Revert back</Button>
        <Button Grid.Row="3" Grid.Column="2" Click="ButtonFixOnClick">Fix</Button>
    </Grid>
</Window>


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Forms;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml;
using System.Xml.Linq;
using Application = System.Windows.Application;
using MessageBox = System.Windows.MessageBox;

/// <summary>
/// Applying recommanded modifications in section : "MSBuild-Integrated package restore vs. Automatic Package Restore"
/// of : http://docs.nuget.org/Consume/Package-Restore/Migrating-to-Automatic-Package-Restore
/// </summary>

namespace FixNuGetProblemsInVs2015
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            DirProjects.Text = @"c:\prj";
            // DirPackages.Text = @"C:\PRJ\NuGetPackages";
        }

        private void BrowseDirProjectsOnClick(object sender, RoutedEventArgs e)
        {
            FolderBrowserDialog dlg = new FolderBrowserDialog();
            dlg.SelectedPath = DirProjects.Text;
            if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                DirProjects.Text = dlg.SelectedPath;
            }
        }

        //private void BrowseDirPackagesOnClick(object sender, RoutedEventArgs e)
        //{
        //  FolderBrowserDialog dlg = new FolderBrowserDialog();
        //  dlg.SelectedPath = DirPackages.Text;
        //  if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        //  {
        //      DirPackages.Text = dlg.SelectedPath;
        //  }
        //}

        // private string _dirPackages;

        private void ButtonFixOnClick(object sender, RoutedEventArgs e)
        {
            DoJob(false);
        }

        private void ButtonRevertOnClick(object sender, RoutedEventArgs e)
        {
            DoJob(true);
        }

        private void DoJob(bool revert = false)
        {
            TxtLog.Text = "";

            string dirProjects = DirProjects.Text;
            // _dirPackages = DirPackages.Text;

            if (!Directory.Exists(dirProjects))
            {
                MessageBox.Show("Projects directory does not exists: " + dirProjects);
                return;
            }

            //if (!Directory.Exists(_dirPackages))
            //{
            //  MessageBox.Show("Packages directory does not exists: " + _dirPackages);
            //  return;
            //}

            RecurseFolder(dirProjects, revert);
        }

        private void RecurseFolder(string dirProjects, bool revert = false)
        {
            if (revert)
            {
                Revert(dirProjects);
            }
            else
            {
                FixFolder(dirProjects);
            }

            foreach (string subfolder in Directory.EnumerateDirectories(dirProjects))
            {
                RecurseFolder(subfolder, revert);
            }
        }

        private const string BackupSuffix = ".fix_nuget_backup";

        private void Revert(string dirProject)
        {
            foreach (string filename in Directory.EnumerateFiles(dirProject))
            {
                if (filename.ToLower().EndsWith(BackupSuffix))
                {
                    string original = filename.Substring(0, filename.Length - BackupSuffix.Length);
                    if (File.Exists(original))
                    {
                        File.Delete(original);                                          
                    }
                    File.Move(filename, original);
                    Log("File reverted: " + filename + " ==> " + original);
                }
            }
        }

        private void FixFolder(string dirProject)
        {
            BackupFile(System.IO.Path.Combine(dirProject, "nuget.targets"));
            BackupFile(System.IO.Path.Combine(dirProject, "nuget.exe"));

            foreach (string filename in Directory.EnumerateFiles(dirProject))
            {
                if (filename.ToLower().EndsWith(".csproj"))
                {
                    FromProjectFileRemoveNugetTargets(filename);
                }
            }
        }

        private void BackupFile(string path)
        {
            if (File.Exists(path))
            {
                string backup = path + BackupSuffix;
                if (!File.Exists(backup))
                {
                    File.Move(path, backup);
                    Log("File backup: " + backup);
                }
                else
                {
                    Log("Project has already a backup: " + backup);
                }
            }
        }

        private void FromProjectFileRemoveNugetTargets(string prjFilename)
        {
            XDocument xml = XDocument.Load(prjFilename);

            List<XElement> elementsToRemove = new List<XElement>();

            foreach (XElement element in xml.Descendants())
            {
                if (element.Name.LocalName == "Import")
                {
                    var att = element.Attribute("Project");
                    if (att != null)
                    {
                        if (att.Value.Contains("NuGet.targets"))
                        {
                            elementsToRemove.Add(element);
                        }
                    }
                }

                if (element.Name.LocalName == "Target")
                {
                    var att = element.Attribute("Name");
                    if (att != null && att.Value == "EnsureNuGetPackageBuildImports")
                    {
                        elementsToRemove.Add(element);
                    }
                }
            }

            if (elementsToRemove.Count > 0)
            {
                elementsToRemove.ForEach(element => element.Remove());
                BackupFile(prjFilename);
                xml.Save(prjFilename);
                Log("Project updated: " + prjFilename);
            }
        }

        private void Log(string msg)
        {
            TxtLog.Text += msg + "\r\n";
        }

    }
}

Answer 7

进入：

Tools
Extensions and Updates

在右边的搜索框上插入Nuget Package Manager 并进行设置（完整设置）。

之后，您将在“工具”部分中看到“管理 Nuget 包”。

Answer 8

谨记

重新安装 NuGet 包管理器 NOT 似乎会删除 c:\users\name\AppData\Roaming\NuGet!

中保存的现有 NuGet.Config 文件

我的缺少 'packageSources' 部分（为什么，我不知道）但是因为这个文件没有重新创建，NuGet 仍然没有工作！

所以要么手动进入这个部分，要么删除这个配置文件，然后通过扩展和更新重新安装 NuGet，这将重新创建一个全新的！

Answer 9

VS2015 中的 nuget 似乎设置为仅显示 Microsoft 软件包。为了能够搜索 nuget.org 中的所有包，请转到工具 > 选项 > NuGet 包管理器 > 包源，单击添加，将 nuget.org 作为名称，将 https://www.nuget.org/api/v2/ 作为源，然后单击确定。现在，在 Nuget 包管理器中，您可以 select nuget.org（或全部）作为包源，您将能够搜索所有包（不仅是来自 Microsoft 的包）。

Answer 10

我在 google 上找到了这个，得到了类似的错误：'NuGetPackage' 包没有正确加载。

An error occurred while reading file xxx. There are duplicate packages.

检查每个项目中的 packages.config 文件，并从中删除重复的包行，它应该可以工作。

Answer 11

重新启动 Visual Studio (2017) 为我解决了这个问题。

VS2015 - 'NuGetPackage' 包未正确加载

VS2015 - The 'NuGetPackage' package did not load correctly

nuget

visual-studio-2015