blocks|key|3570999|text|首先，我将检查您的MusicKarma项目的packages.config文件中是否有Microsoft.Net.Compilers。如果没有，那么可以从NuGet包中删除与该MusicKarma.csproj包相关的所有内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3571000|如果您使用的是Microsoft.Net.Compilers+NuGet包，那么我的猜测是路径不正确。查看错误消息中的目录名，我猜想MusicKarma解决方案文件(.sln)与MusicKarma.csproj位于同一个目录中。如果是这样，那么packages目录可能是错误的，因为默认情况下，packages目录将位于解决方案目录中。因此，我假设您的软件包目录是：|3571001|C:\Users\Bryan\Documents\Visual+Studio+2015\Projects\MusicKarma\packages|code-block|syntax|javascript|3571002|当您的MusicKarma.csproj文件正在寻找道具文件时，请参见：|3571003|C:\Users\Bryan\Documents\Visual+Studio+2015\Projects\packages\Microsoft.Net.Compilers.1.1.1\build|3571004|因此，如果是这样，那么您可以通过编辑MusicKarma.csproj文件中的路径或重新安装NuGet包来解决问题。|3571005|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

First I would check if your MusicKarma project has Microsoft.Net.Compilers in its packages.config file. If not then you could remove everything to do with that NuGet package from your MusicKarma.csproj.

If you are using the Microsoft.Net.Compilers NuGet package then my guess is that the path is incorrect. Looking at the directory name in the error message I would guess that the MusicKarma solution file (.sln) is in the same directory as the MusicKarma.csproj. If so then the packages directory is probably wrong since by default the packages directory would be inside the solution directory. So I am assuming that your packages directory is:

<pre><code>C:\Users\Bryan\Documents\Visual Studio 2015\Projects\MusicKarma\packages
</code></pre>

Whilst your MusicKarma.csproj file is looking for the props file in:

<pre><code>C:\Users\Bryan\Documents\Visual Studio 2015\Projects\packages\Microsoft.Net.Compilers.1.1.1\build
</code></pre>

So if that is the case then you can fix the problem by editing the path in your MusicKarma.csproj file or by reinstalling the NuGet package.

blocks|key|1702096|text|当我在文件系统中创建文件夹(不是在我的解决方案中)并移动一些项目时，出现了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702097|结果表明，包路径与csproj文件是相对的。因此，我不得不更改引用的"HintPath“：|1702098|<Reference+Include="EntityFramework,+Version=6.0.0.0,+Culture=neutral,+PublicKeyToken=b77a5c561934e089,+processorArchitecture=MSIL">
++++<HintPath>..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.dll</HintPath>
++++<Private>True</Private>
</Reference>|code-block|syntax|javascript|1702099|至：|1702100|<Reference+Include="EntityFramework,+Version=6.0.0.0,+Culture=neutral,+PublicKeyToken=b77a5c561934e089,+processorArchitecture=MSIL">
++++<HintPath>..\..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.dll</HintPath>
++++<Private>True</Private>
</Reference>|1702101|注意'HintPath‘中的双"..\“。|1702102|我还必须更改错误条件，例如，我必须更改：|1702103|<Error+Condition="!Exists('..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props')"+Text="$([System.String]::Format('$(ErrorText)',+'..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props'))"+/>|1702104|1702105|<Error+Condition="!Exists('..\..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props')"+Text="$([System.String]::Format('$(ErrorText)',+'..\..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props'))"+/>|1702106|再次注意双"..\“。|1702107|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|11|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|12|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|13|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|14|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|15|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|16|8|@]|9|@]|A|$G|H]]|$1|S|3|J|5|6|7|17|8|@]|9|@]|A|$]]|$1|T|3|U|5|F|7|18|8|@]|9|@]|A|$G|H]]|$1|V|3|W|5|6|7|19|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|Y|$]]

This problem appeared for me when I was creating folders in the filesystem (not in my solution) and moved some projects around.

Turns out that the package paths are relative from the csproj files. So I had to change the "HintPath" of my references:

<pre><code>&lt;Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL"&gt;
 &lt;HintPath&gt;..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.dll&lt;/HintPath&gt;
 &lt;Private&gt;True&lt;/Private&gt;
&lt;/Reference&gt;
</code></pre>

To:

<pre><code>&lt;Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL"&gt;
 &lt;HintPath&gt;..\..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.dll&lt;/HintPath&gt;
 &lt;Private&gt;True&lt;/Private&gt;
&lt;/Reference&gt;
</code></pre>

Notice the double "..\" in 'HintPath'.

I also had to change my error conditions, for example I had to change:

<pre><code>&lt;Error Condition="!Exists('..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props'))" /&gt;
</code></pre>

To:

<pre><code>&lt;Error Condition="!Exists('..\..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props'))" /&gt;
</code></pre>

Again, notice the double "..\".

blocks|key|3571094|text|我还犯了这个错误，我从.csproj文件中获取了这部分代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3571095|+<Target+Name="EnsureNuGetPackageBuildImports"+BeforeTargets="PrepareForBuild">
++++++<PropertyGroup>
++++++++<ErrorText>This+project+references+NuGet+package(s)+that+are+missing+on+this+computer.+Enable+NuGet+Package+Restore+to+download+them.++For+more+information,+see+http://go.microsoft.com/fwlink/?LinkID=322105.+The+missing+file+is+{0}.</ErrorText>
++++++</PropertyGroup>
++++++<Error+Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')"+Text="$([System.String]::Format('$(ErrorText)',+'$(SolutionDir)\.nuget\NuGet.targets'))"+/>
++++</Target>|code-block|syntax|javascript|3571096|删除代码的那一部分。如果使用记事本打开文件.csproj，请删除Targuet代码，保存并打开正常化。|3571097|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I also had this error
I took this part of code from .csproj file:
<pre><code> &lt;Target Name=&quot;EnsureNuGetPackageBuildImports&quot; BeforeTargets=&quot;PrepareForBuild&quot;&gt;
 &lt;PropertyGroup&gt;
 &lt;ErrorText&gt;This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.&lt;/ErrorText&gt;
 &lt;/PropertyGroup&gt;
 &lt;Error Condition=&quot;!Exists('$(SolutionDir)\.nuget\NuGet.targets')&quot; Text=&quot;$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))&quot; /&gt;
 &lt;/Target&gt;
</code></pre>
delete that part of code. if you open the file .csproj with notepad, delete the Targuet code, save, and open normaly

blocks|key|3571116|text|这是一个有点旧的帖子，但我最近遇到了这个问题。我所做的就是从packages文件夹中删除所有nuget包并还原它。我成功地建立了解决方案。希望能对某人有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3571117|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

It's a bit old post but I recently ran into this issue. 
All I did was deleted all the nuget packages from packages folder and restored it.
I was able to build the solution successfully.
Hopefully helpful to someone.

blocks|key|1792577|text|为什么需要对packages.config或.csproj文件进行操作？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1792578|错误明确表示:使用NuGet包还原来下载它们。|1792579|相应地使用它--这个指令：https://learn.microsoft.com/en-us/nuget/consume-packages/package-restore-troubleshooting|offset|length|1792580|Visual用户的快速解决方案
1.选择Tools+>+NuGet+Package+>菜单命令。
2.在包还原项下设置这两个选项。
3.选择OK。
4.重新建立你的项目。|blockquote|1792581|entityMap|0|LINK|mutability|MUTABLE|url|https://learn.microsoft.com/en-us/nuget/consume-packages/package-restore-troubleshooting^0|0|0|D|2G|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@$F|V|G|W|1|X]]|A|$]]|$1|H|3|I|5|J|7|Y|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Why should you need manipulations with packages.config or .csproj files? 
The error explicitly says: Use NuGet Package Restore to download them. 
Use it accordingly this instruction: <a href="https://learn.microsoft.com/en-us/nuget/consume-packages/package-restore-troubleshooting" rel="nofollow noreferrer">https://learn.microsoft.com/en-us/nuget/consume-packages/package-restore-troubleshooting</a>:

<blockquote>
 Quick solution for Visual Studio users 
 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.
</blockquote>

blocks|key|1702163|text|对我和其他人来说，快速解决方案就像一种魅力：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702164|如果使用VS+2015%2B，只需从项目的.csproj文件中删除以下行：|1702165|++<Import+Project="$(SolutionDir)\.nuget\NuGet.targets"+Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')"+/>
++<Target+Name="EnsureNuGetPackageBuildImports"+BeforeTargets="PrepareForBuild">
++++<PropertyGroup>
++++++<ErrorText>This+project+references+NuGet+package(s)+that+are+missing+on+this+computer.+Enable+NuGet+Package+Restore+to+download+them.++For+more+information,+see+http://go.microsoft.com/fwlink/?LinkID=322105.+The+missing+file+is+{0}.</ErrorText>
++++</PropertyGroup>
++++<Error+Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')"+Text="$([System.String]::Format('$(ErrorText)',+'$(SolutionDir)\.nuget\NuGet.targets'))"+/>
++</Target>|code-block|syntax|javascript|1702166|在VS+2015%2B解决方案资源管理器中：|1702167|右键单击项目名称->卸载项目|ordered-list-item|1702168|右击项目名称->编辑.csproj|1702169|从文件中删除上面指定的行并保存|1702170|右键单击项目名称->+Reload项目|1702171|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|X|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Y|8|@]|9|@]|A|$]]|$1|K|3|L|5|M|7|Z|8|@]|9|@]|A|$]]|$1|N|3|O|5|M|7|10|8|@]|9|@]|A|$]]|$1|P|3|Q|5|M|7|11|8|@]|9|@]|A|$]]|$1|R|3|S|5|M|7|12|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|U|$]]

Quick solution that worked like a charm for me and others:

If you are using VS 2015+, just remove the following lines from the .csproj file of your project:

<pre><code> &lt;Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" /&gt;
 &lt;Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild"&gt;
 &lt;PropertyGroup&gt;
 &lt;ErrorText&gt;This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.&lt;/ErrorText&gt;
 &lt;/PropertyGroup&gt;
 &lt;Error Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))" /&gt;
 &lt;/Target&gt;
</code></pre>

In VS 2015+ Solution Explorer:

<ol>
<li>Right-click project name -> Unload Project</li>
<li>Right-click project name -> Edit .csproj </li>
<li>Remove the lines specified above from the file and save</li>
<li>Right-click project name -> Reload Project</li>
</ol>

blocks|key|1702188|text|在我的例子中，我删除了以前的Project+&创建了一个具有不同名称的新项目，当我构建该项目时，它会显示相同的错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702189|我刚刚在项目的csproj文件中编辑了项目名称&它工作了.！|1702190|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

In my case, I deleted the Previous Project &amp; created a new project with different name, when i was building the Project it shows me the same error.
I just edited the Project Name in csproj file of the Project &amp; it Worked...!

blocks|key|1702209|text|从.csproj文件中删除这部分代码，并将其移到一个短的绝对路径中。意思是，最好是在一条较短的绝对路径上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702210|C:\Users\name\OneDrive\Desktop\spath1\test\test5....\mvc\Ecommerce|code-block|syntax|javascript|1702211|而不是上面的，宇可以把这个项目移到下面，|1702212|C:\Users\name\OneDrive\Desktop\mvc\Ecommerce|1702213|<Target+Name="EnsureNuGetPackageBuildImports"+BeforeTargets="PrepareForBuild">
++++<PropertyGroup>
++++++<ErrorText>This+project+references+NuGet+package(s)+that+are+missing+on+this+computer.+Enable+NuGet+Package+Restore+to+download+them.++For+more+information,+see+http://go.microsoft.com/fwlink/?LinkID=322105.+The+missing+file+is+{0}.</ErrorText>
++++</PropertyGroup>
++++<Error+Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')"+Text="$([System.String]::Format('$(ErrorText)',+'$(SolutionDir)\.nuget\NuGet.targets'))"+/>
++</Target>|1702214|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

delete this part of code from .csproj file and move to project into a short absolute path.
it means, is's better to located on a short absolute path.
<pre><code>C:\Users\name\OneDrive\Desktop\spath1\test\test5....\mvc\Ecommerce
</code></pre>
instead of the above, yu can move the project like below,
<pre><code>C:\Users\name\OneDrive\Desktop\mvc\Ecommerce
</code></pre>
<pre><code>&lt;Target Name=&quot;EnsureNuGetPackageBuildImports&quot; BeforeTargets=&quot;PrepareForBuild&quot;&gt;
 &lt;PropertyGroup&gt;
 &lt;ErrorText&gt;This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.&lt;/ErrorText&gt;
 &lt;/PropertyGroup&gt;
 &lt;Error Condition=&quot;!Exists('$(SolutionDir)\.nuget\NuGet.targets')&quot; Text=&quot;$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))&quot; /&gt;
 &lt;/Target&gt;
</code></pre>

blocks|key|1702257|text|我不太确定，我的项目发生了什么变化，或者是因为dll版本在vs+2015、vs+2017或vs+2019年之间崩溃而发生的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702258|我从TFS中克隆了我的项目，这个案例发生了。|1702259|我就是这样做的：|1702260|将Microsoft.Net.Compilers从v.1更新到V1.1|unordered-list-item|1702261|在源代码管理Exproler上签入挂起的更改|1702262|撤消对文件的更改：.csproj、packages.config和web.config|1702263|关闭VS2015+-清洁解决方案-重建解决方案|1702264|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$]]|$1|I|3|J|5|H|7|U|8|@]|9|@]|A|$]]|$1|K|3|L|5|H|7|V|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|W|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|P|$]]

I am not so sure, what changes happened on my project, or is this case happened because crash of dll version between vs 2015 or vs 2017 or vs 2019.
I have cloned my project from TFS, and this case happened.
This is what I did :
<ul>
<li>Update Microsoft.Net.Compilers from v.1 to v.1.1</li>
<li>Check in Pending changes on Source Control Exproler</li>
<li>Undo changes on files : .csproj, packages.config, and web.config</li>
<li>Close VS2015 - Clean Solution - Rebuild Solution</li>
</ul>

When I try to build my solution, I get the following error message:

<blockquote>
 Severity Code Description Project File Line Suppression State
 Error This project references NuGet package(s) that are missing on
 this computer. Use NuGet Package Restore to download them. For more
 information, see <a href="http://go.microsoft.com/fwlink/?LinkID=322105" rel="noreferrer">http://go.microsoft.com/fwlink/?LinkID=322105</a>. The
 missing file is
 ..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Compilers.props. MusicKarma C:\Users\Bryan\Documents\Visual
 Studio 2015\Projects\MusicKarma\MusicKarma.csproj 268
</blockquote>

When I look In my packages folder, I can find I file named Microsoft.Net.Compilers.props

I have tried to use Nuget Restore, but it keeps saying that I have all the packages.

This happens when I take this project from TFS to one of my computers.

Build error, This project references NuGet

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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当我试图构建我的解决方案时，我会收到以下错误消息：严重性代码描述项目文件行抑制状态错误此项目引用此计算机上缺少的NuGet包。使用NuGet包还原来下载它们。有关更多信息，请参见。缺少的文件是..\packages\Microsoft.Net.Compilers.1.1.1\build\Microsoft.Net.Co...

问生成错误，此项目引用NuGet
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问生成错误，此项目引用NuGetEN