“无法启动此应用程序。” 仅当文件在 system32 目录中时

Question

I wrote a little piece of software that downloads file from internet, that is, nothing more. My intentions are to use it thru the command line... It works great, but when I place it in C:\\Windows\\System32\\ to actually use it from everywhere I want it doesn't work now... It didn't throw an exception... it just show me this messagebox - http://i.imgur.com/a7rlMgo.png and if I click "Yes" it opens this page in the browser - http://support.microsoft.com/kb/2715633/en-us

What should I do to get it working?

The code if it is of any use.. :

private const string InsufficientParametersMessage = "Insufficient Parameters...";

private static string[] _arguments;

static void Main(string[] args)
{
    _arguments = args;

    TakeCommand();

    Environment.Exit(0);
}

private static void TakeCommand()
{
    if (_arguments.Length < 1)
    {
        Console.WriteLine(InsufficientParametersMessage);
    }
    else if (_arguments.Length == 1)
    {
        DownloadFile(_arguments[0]);
    }
    else if (_arguments.Length > 1)
    {
        DownloadFile(_arguments[0], _arguments[1]);
    }
}

private static void DownloadFile(string url)
{
    DownloadFile(url, Path.GetFileName(url));
}

private static void DownloadFile(string url, string localFileName)
{
    WebClient client = new WebClient();

    if (File.Exists(localFileName))
    {
        File.Delete(localFileName);
    }

    try
    {
        client.DownloadFile(url, localFileName);
        Console.WriteLine("Done...");
    }
    catch (Exception exception)
    {
        Console.WriteLine(exception.Message);
    }
}

Answer 1

Short Answer: Uncheck "Prefer 32-bit".

Long Answer: (Not 100% sure but here goes)

Assuming you have a 64 bit machine, keep in mind that System32 is a folder that is reserved for 64 bit application usage, and although it may seem strange, SysWOW64 contains 32 bit dlls and is reserved for 32-bit applications. Typically, 32-bit applications that access System32 will go through a file system redirector to the SysWOW64 folder. More info here .

However, when your application (which runs as a 32-bit process) runs in System32 itself, the redirector probably doesn't do anything because it thinks there isn't any need to redirect, which is why your app works outside of System32 but not inside it.

So to solve this, uncheck Prefer 32-bit so that it will try to target 64 bit platform, ... or better yet , put the app elsewhere and add the application directory to your environment path variable. That way you can still access your application .exe anywhere, and it won't pollute your System32 folder which should only be used for Windows files anyways.

Answer 2

此答案可能不适用于 OP 的问题（无论如何都已解决），但可能适用于因搜索“无法启动此应用程序”和 System32 而最终到达此处的其他人。在我的情况下，我编写了一个屏幕保护程序C# 程序必须运行 32 位，解决方案是将其安装在 Windows 目录中，而不是 Windows\\System32。然后它在 32 位和 64 位系统上都可以正常工作。

Answer 3

If you put your 32-bit exe in both the System32 and the SysWOW64 folder. It works just fine. Not one, not the other, but both folders.

This might sound strange, but try it. If you put the same exe in both folders it will start up without any modifications.

Answer 4

我刚刚将 NuGet.exe 从 c:\\Windows\\System32 移动到 c:\\Windows 并且它可以工作。

Answer 5

Maybe this answer is not directly applicable for OP answer, but for sure it is connected and it solved my issue.
On my company computer I have a few folders, which automatically sync with OneDrive. Those files are permanently labelled as "Work", not "Personal".
Each time I copied between those folders, which are syncing, I cannot run my developed application. When I created a new directory, outside of syncing folders, I was able to change File Ownership to "Personal" (see below):

Just after that, my program works perfectly.