blocks|key|1671375|text|通过安装最新的NuGet包管理器解决了此问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1671376|https://visualstudiogallery.msdn.microsoft.com/4ec1526c-4a8c-4a84-b702-b21a8f5293ca|offset|length|1671377|不要忘记重新启动Visual+Studio。|1671378|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|2B|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

This was resolved by installing the latest NuGet Package Manager: 

<a href="https://visualstudiogallery.msdn.microsoft.com/4ec1526c-4a8c-4a84-b702-b21a8f5293ca" rel="noreferrer">https://visualstudiogallery.msdn.microsoft.com/4ec1526c-4a8c-4a84-b702-b21a8f5293ca</a>

Don't forget to restart Visual Studio.

blocks|key|1671411|text|对我来说唯一有效的解决方案是从Visual+Studio+2013中完全卸载nuget，然后重新安装它，中间必须重新启动VS。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1671412|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|$]]

The only solution that worked for me was to uninstall nuget completely from Visual Studio 2013 and then install it again with the obligatory restart of VS in between.

blocks|key|1885255|text|我在我们的TeamCity构建服务器上遇到了这个问题。我尝试在构建服务器上更新NuGet+(通过TC)，但不起作用。我最终解决了这个问题，将Nuget安装程序构建步骤的“更新模式”从解决方案文件更改为packages.config。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1885256|entityMap^0|2S|F|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

I was getting this issue on our TeamCity build server. I tried updating NuGet on the build server (via TC) but that didn't work. I finally resolved the problem by changing the "Update Mode" of the Nuget Installer build step from solution file to <code>packages.config</code>.

blocks|key|1885598|text|在我的例子中，我必须删除项目文件夹/.nuget中的文件NuGet.exe并重新构建项目。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1885599|我在NuGet.targets中也有标记为true的DownloadNuGetExe：|1885600|<DownloadNuGetExe+Condition="+'$(DownloadNuGetExe)'+==+''+">true</DownloadNuGetExe>|code-block|syntax|javascript|1885601|希望能有所帮助。|1885602|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

In my case I had to delete the file NuGet.exe in the Project folder/.nuget and rebuild the project.

I also have in NuGet.targets the DownloadNuGetExe marked as true:

<pre><code>&lt;DownloadNuGetExe Condition=" '$(DownloadNuGetExe)' == '' "&gt;true&lt;/DownloadNuGetExe&gt;
</code></pre>

Hope it's helps.

blocks|key|1671859|text|我在Visual+Studio2010的过时版本上遇到了这个错误。由于项目配置的原因，我无法将此版本更新到较新版本。因此，上面建议的NuGet更新并没有为我解决问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1671860|在这种和类似情况下出现错误的根本原因是您尝试安装的包的依赖项，这些依赖项与您的项目中可用的.NET版本不兼容。|1671861|通用的解决方案不是强制更新Visual+Studio或.NET，而是安装与您的系统兼容的相同软件包的旧NuGet版本。|1671862|不可能确切地说出哪个早期版本可以工作。在我的示例中，此命令在没有任何NuGet更新的情况下安装了软件包。|1671863|Install-Package+X+-Version+[compatible+version+number]|code-block|syntax|javascript|1671864|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|R|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|S|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I faced this error on outdated version of Visual Studio 2010. Due to project configuration I was not able to update this version to newer. Therefore, update of NuGet advised above did not fix things for me. 

Root reason for the error in this and similar situations is in dependencies of the package you try to install, which are not compatible with .NET version available in your project. 

Universal solution is not obligatory update of Visual Studio or .NET but in installation of older NuGet versions of the same package compatible with your system. 

It is not possible to tell for sure, which of earlier versions will work. In my case, this command installed the package without any NuGet updates.

<pre><code>Install-Package X -Version [compatible version number]
</code></pre>

blocks|key|1671938|text|在一个使用VS2010的项目中，我只能通过包管理器控制台安装我需要的包的旧版本来解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1671939|此命令起作用：|1671940|PM>+Install-Package+EPPlus+-Version+4.5.3.1|code-block|syntax|javascript|1671941|此命令不起作用：|1671942|PM>+Install-Package+EPPlus+-Version+4.5.3.2|1671943|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

In a project using vs 2010, I was only able to solve the problem by installing an older version of the package that I needed via Package Manager Console.

This command worked:

<pre><code>PM&gt; Install-Package EPPlus -Version 4.5.3.1
</code></pre>

This command did not work:

<pre><code>PM&gt; Install-Package EPPlus -Version 4.5.3.2
</code></pre>

I'm getting the following error in NuGet while trying to install package <code>Microsoft.AspNet.Server.IIS</code>

<pre><code>Attempting to resolve dependency 'Microsoft.AspNet.Loader.IIS.Interop (≥ 1.0.0-alpha4-10330)'.
Attempting to resolve dependency 'Microsoft.AspNet.Loader.IIS (≥ 1.0.0-alpha4-10330)'.
'Microsoft.AspNet.Loader.IIS' already has a dependency defined for 'Microsoft.AspNet.FeatureModel'.
</code></pre>

How to resolve it?

UPDATE:
Also, I'm getting the following:

<pre><code>Attempting to resolve dependency 'Microsoft.Framework.DependencyInjection (≥ 1.0.0-alpha4-10326)'.
'Microsoft.Framework.DependencyInjection' already has a dependency defined for 'Microsoft.Framework.ConfigurationModel'.
</code></pre>

NuGet: 'X' already has a dependency defined for 'Y'

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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在尝试安装软件包Microsoft.AspNet.Server.IIS时，我在NuGet中遇到以下错误Attempting to resolve dependency 'Microsoft.AspNet.Loader.IIS.Interop (≥ 1.0.0-alpha4-10330)'.Attempting to r...

问NuGet：'X‘已经为'Y’定义了一个依赖项
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