Question

.net framework 3.5 安装时候setup.exe遇到问题需要关闭。怎么回事啊啊，，，

[09/03/12,17:57:03] Microsoft .NET Framework 2.0a: [2] Failed to fetch setup file in CBaseComponent::PreInstall()
[09/03/12,17:57:03] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147467260.
[09/03/12,17:57:03] setup.exe: [2] CSetupManager::RunInstallPhase() - Call to Pre/Install/Post for InstallComponents failed
[09/03/12,17:57:03] setup.exe: [2] CSetupManager::RunInstallPhaseAndCheckResults() - RunInstallPhase() returned a NULL piActionResults
[09/03/12,17:57:03] setup.exe: [2] CSetupManager::RunInstallFromList() - RunInstallPhaseAndCheckResults failed [2]
[09/03/12,17:57:03] setup.exe: [2] ISetupManager::RunInstallLists(IP_PREINSTALL failed in ISetupManager::RunInstallFromThread()
[09/03/12,17:57:03] setup.exe: [2] ISetupManager::RunInstallFromThread() failed in ISetupManager::RunInstall()
[09/03/12,17:57:03] setup.exe: [2] CSetupManager::Run() - Call to RunInstall() failed
[09/03/12,17:57:04] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0a is not installed.
[09/03/12,17:57:04] WapUI: [2] DepCheck indicates XPSEPSC Installer was not attempted to be installed.
[09/03/12,17:57:04] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 SP2 x86 was not attempted to be installed.
[09/03/12,17:57:04] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' was not attempted to be installed.
[09/03/12,17:57:04] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5LP - CHS was not attempted to be installed.
[09/03/12,18:08:50] Microsoft .NET Framework 3.0 SP2 x86: [2] Error: Installation failed for component Microsoft .NET Framework 3.0 SP2 x86. MSI returned error code 1603
终于找到原因了，第一步先清理，就用那个清理工具dotnetfx_cleanup_tool.zip。第二步在安装的时候查看Windows Installer服务，如果停止了，赶紧的启动起来，就能安装上去了。

Answer 1

这是版本冲突的原因。
下载 .NET 清理工具
http://blogs.msdn.com/cfs-file.ashx/__key/CommunityServer-Components-PostAttachments/00-08-90-44-93/dotnetfx_5F00_cleanup_5F00_tool.zip

将系统原来安装的.NET 都清理掉，重启系统后，再安装

Answer 2

先确定你的电脑上已经安装.net framework 2.0或3.5版本，再进行一次。

追问

xp系统默认的都安装的2.0的，我是直接安装的3.5版本就是那样的问题，

追答

装个更加高级的

Answer 3

一般这种安装出现问题的话 建议重装系统 他有可能是你之前有些什么东西存在
重装系统 第一件是装SQL 在是VS