Visual Studio 2010 中缺少 dotnet Framework 4

本文介绍了Visual Studio 2010 中缺少 dotnet Framework 4的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我刚刚安装了 Visual Studio 2010，但是当我创建一个新项目时，Framework 4 没有出现在目标框架的选项中.我知道框架 4 安装正确，因为设置为 v4 的新应用程序池是在 IIS 中创建的.出于某种原因，它只是没有出现在 Visual Studio 中.我尝试修复 dotnet 4 并重新安装 Visual Studio，但仍然没有运气.有其他人遇到过这个问题或知道如何解决吗?

I just installed visual studio 2010 but when i create a new project Framework 4 does not appear in the options for target framework. I know framework 4 installed correctly because the new app pools set to v4 were created in IIS. For some reason it's just not showing up in visual studio. I tried repairing dotnet 4 and reinstalling visual studio but still no luck. Anyone else have this problem or know how to fix it?

推荐答案

导致丢失 .Net4 问题的更改:1.我在中更改了一些注册表设置HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersion通用文件目录CommonFilesDir (x86)CommonW6432Dir程序文件目录ProgramFilesDir (x86)程序W6432Dir所有这些都从 C: 驱动器移动到另一个驱动器(E:在我的情况下)2.我更改了一些用户文件夹的位置:C:UsersAppDataLocalLowC:UsersAppDataRoaming那些被移动(通过属性->路径->移动"按钮)从 C: 驱动器到 F: 驱动器.恢复后 1. 回到驱动器 C:并在 C:UsersAppData 中创建指向新位置的符号链接，它再次工作(注意:我在恢复更改之前卸载了 VS，然后再次安装)(创建链接: mklink/d C:UsersAppDataLocalLow E:DataLocalLow)我不能说是否真的需要这两个更改，因为我同时更改了两个.但最后它又起作用了;)问候，霜冻元

Changes which lead to missing .Net4 problem: 1. I changed some registry settings in HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersion CommonFilesDir CommonFilesDir (x86) CommonW6432Dir ProgramFilesDir ProgramFilesDir (x86) ProgramW6432Dir All those were moved from C: drive to another drive (E: in my case) 2. I changed the location of some user folders: C:Users<name>AppDataLocalLow C:Users<name>AppDataRoaming Those were moved (via Properties->Path->"Move" button) from C: drive to F: drive. After reverting 1. back to drive C: and creating symbolic links in C:Users<name>AppData to the new locations, it worked again (note: I uninstalled VS before reverting the changes, and installed again afterwards) (Create link with: mklink /d C:Users<name>AppDataLocalLow E:DataLocalLow) I can not say if both changes are really needed, because I changed both at once. But finally it works again ;) Greetings, Frostregen