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.NET Framework 3.5/4.0/4.5等版本都需要安装一遍吗？

更新时间：2026-08-23 02:06:32 | 编辑：伊人 | 信息来源：互联网

　　.NET Framework 3.5/4.0/4.5等版本都是Windows 组件，很多用户都会在Windows安装之后纠结一下.NET Framework的安装，可能并不知道他们是全部安装还是只需要安装一个最高版本？笔者就此为题，来说说.NET Framework 3.5/4.0/4.5等版本之间的包含关系。

　　.NET Framework 是在 Windows 上运行的多个应用程序不可缺少的一部分，并且对这些应用程序运行发挥着同样的功能。 对开发人员而言，.NET Framework 提供了一个用于构建应用程序的一致的编程模型。 如果你使用的是 Windows 操作系统，则你的计算机上可能已安装 .NET Framework。具体而言，.NET Framework 4.5 包含于 Windows 8，.NET Framework 4.5.1 包含于 Windows 8.1，而 .NET Framework 4.6 包含于 Windows 10。

　　.NET Framework 3.5/4.0/4.5等版本都需要安装一遍吗？

　　正常情况下：

　　Windows XP装2、3.5、4.0；

　　Windows 7装4.6.2；

　　Windows 8/8.1/10装3.5/4.6.2；

　　Windows 10（创意者/RS1/1607/14393）装3.5；

　　Windows 8及以上的装3.5比较麻烦，推荐在新装完系统后赶紧弄好，不然系统更新后版本号对不上，可能会安装失败。

　　如何正确安装.NET Framework ？

　　Installing the .NET Framework 3.5 on Windows 8、Windows 8.1 and Windows 10

　　命令：

01dism /online /enable-feature /featurename:netfx3 /source:X:\sources\sxs

复制代码dism /online /enable-feature /featurename:netfx3 /source:X:\sources\sxs

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  6. 当前时间: 2026-08-23 02:06:31
  7. 当前网协: 216.73.216.20
  8. 请求路径: /anzhuang/22385.html
  9. 运行时间: 1.1973
  10. 内存开销: 1.31 MB
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