.NET'任何CPU'目标Winform EXE在*某些* Vista x64计算机上运行为32位 [英] .NET 'Any CPU' targeted Winform EXE runs as 32-bit on *some* Vista x64 computers

问题描述

在特定的Vista Business x64计算机上运行.NET应用程序时遇到一个非常奇怪的问题。这个操作系统大约3个月前安装在硬件上（它不是虚拟机），安装了Visual Studio 2008，Office 2007和MS SQL Server。

There is a very strange problem I am encountering regarding running .NET apps on a particular Vista Business x64 machine. This OS was installed on the hardware (it is not a virtual machine) about 3 months ago and has Visual Studio 2008, Office 2007 and MS SQL Server installed.

我创建了一个在Visual Studio 2008中Winforms EXE并且目标"任何CPU" - 我希望此EXE在Vista x64中作为64位进程运行。但是当我在我的Vista x64机器上运行这个程序时，该程序显示为32位进程。

I created a Winforms EXE in Visual Studio 2008 and targeted "Any CPU" - I expect this EXE to run as a 64-bit process in Vista x64. However when I run this program on my Vista x64 machine the program shows up as a 32-bit process.

我也编译了同一个程序，目标是x64（而不是'任何CPU'）并且确实在同一台计算机上以64位进程运行。

I also compiled this same program as targeting x64 (rather than 'Any CPU' ) and it does indeed run as a 64-bit process on the same machine.

检查下面的Process Explorer屏幕截图 WindowsFormApplication1ANYCPU.exe （任何CPU目标）和 WindowsFormApplication1x64.exe （x64目标）。

Examine the Process Explorer screenshot below for WindowsFormApplication1ANYCPU.exe (ANY CPU targeted) and WindowsFormApplication1x64.exe (x64-targeted).

我通过检查32验证了这一点Process Explorer的-bit / 64-bit列，同时观察正在加载的.NET框架DLL（用于任何CPU 32位进程的SysWow64，用于x64目标版本的System32）

I verified this by examining the 32-bit/64-bit column of Process Explorer, along with observing the .NET framework DLLs which are being loaded (SysWow64 for the ANY CPU 32-bit process, System32 for the x64-targeted version)

现在，在有人建议第三方DLL或其他依赖项导致此行为的可能性之前，我应该提一下，这个EXE是一个由Visual Studio 2008创建的空的新Winform EXE项目。所以没有pos影响这一点的圣经依赖。我还观察到，像 Paint.NET 这样的.NET应用程序最终会在这台特定的机器上以32位运行，而它应该以64位运行。

Now, before someone suggests the possibility of 3rd party DLLs or other dependencies causing this behavior, I should mention that this EXE is an empty new Winform EXE project created by Visual Studio 2008. So there are no possible dependencies affecting this. I also observe that .NET applications like Paint.NET end up running as 32-bit on this particular machine, when it should be running as 64-bit.

我可以使用相同的可执行文件（目标为"任何CPU "），并在另一台Vista x64计算机上运行它，它作为64位程序运行。因此，似乎我的操作系统有一些特殊之处导致它以32位运行"任何CPU ".NET应用程序。 Windows中的某个设置是否可能导致此问题？与我的同事交谈，他们也在某些计算机上遇到过这种行为，并通过编译他们的应用程序的x86和x64目标版本并让他们的安装程序安装正确的版本来解决这个问题。

I can take this same executable (the one targeted 'Any CPU ') and run it on another Vista x64 computer, and it runs as a 64-bit program. So it seems like there is something peculiar about my OS that is causing it to run 'ANY CPU ' .NET apps as 32-bit. Is there a setting somewhere in Windows that could be causing this? Talking to my colleagues, they have also encountered this behavior on certain computers and have worked around it by compiling x86- and x64-targeted version of their app and letting their installer install the correct version.

显然这会导致严重的问题，例如，如果您链​​接到64位DLL，并且您希望您的代码在x64上以64位运行，但无论出于何种原因，它最终都以32位模式运行。

Obviously this can cause serious issues if for example you are linking to a 64-bit DLL and you are expecting your code to run as 64-bit on x64, but for whatever reason it ends up running in 32-bit mode.

我使用的示例项目是这里（尽管因为它只是一个默认的Visual Studio空项目，没什么可看的）

The sample project I used is here (although since it is just a default Visual Studio empty project there is not much to see)

另外，我用 C：\Program Files \ MicroSoft SDKs启用了Fusion日志记录\ Windows \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ />

Also, I turned on Fusion logging with  C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bin\x64\FUSLOGVW.exe but saw no interesting information.

推荐答案

很奇怪，第一次我'听说过这个。在.exe上运行Corflags.exe实用程序以仔细检查32BIT标志确实已关闭。请注意，如果更改平台目标设置，则必须执行 调试和发布配置。

Pretty strange, first time I've heard of this.  Run the Corflags.exe utility on the .exe to double-check that the 32BIT flag is indeed off.  Beware that if you change the Platform Target setting, you have to do so for both the Debug and the Release configuration.

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