无法在Windows上启动本机消息传递主机，未设置"COMSPEC". [英] Failed to start native messaging host on Windows, "COMSPEC is not set"

问题描述

我有一个chrome扩展程序，可以与本机消息传递主机进行通信以获取一些数据.

I have a chrome extension that communicates with a native messaging host to get some data.

问题是，当我通过快捷方式或任务栏中的固定快捷方式启动Chrome浏览器时，扩展程序无法连接到主机.我总是会收到错误:

The issue is, when I launch the Chrome browser via the shortcut or via the pinned shortcut in the taskbar, the extension is not able to connect to the host. I always get the error:

无法启动本机消息传递主机.

Failed to start native messaging host.

但是，如果我通过命令提示符启动chrome.exe，则一切正常.

However, if I launch the chrome.exe via command prompt, everything works fine.

我尝试过的事没有成功:

Things I tried with no success:

• 任务栏快捷方式没有多余的标志.目标字段具有 以下值:"C:\Program Files(x86)\Google\Chrome\Application\chrome.exe"
• 我尝试使用HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Google\Chrome\NativeMessagingHosts\com.company.extension
下的注册表
• 我尝试使用HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\NativeMessagingHosts\com.company.extension
下的注册表
• 我尝试使用下面的注册表项 HKEY_CURRENT_USER\Software\Google\Chrome\NativeMessagingHosts\com.company.extension
• 试图以管理员身份从文件资源管理器中启动chrome.exe.

• The taskbar shortcut has no extra flags. The target field has the following value: "C:\Program Files(x86)\Google\Chrome\Application\chrome.exe"
• I tried with the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Google\Chrome\NativeMessagingHosts\com.company.extension
• I tried with the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\NativeMessagingHosts\com.company.extension
• I tried with the registry entry under HKEY_CURRENT_USER\Software\Google\Chrome\NativeMessagingHosts\com.company.extension
• Tried launching the chrome.exe as administrator from the file explorer.

更新:

我将标志--enable-logging --v=1添加到了启用日志记录的快捷方式中，当我启动它时，我在控制台中得到以下输出:

I added the flag --enable-logging --v=1 to the shortcut to enable logging and when I launch it I get the following output in the console:

[11036:4160:0302/113902.866:ERROR:native_process_launcher_win.cc(140)] COMSPEC is not set
[11036:11856:0302/113902.882:ERROR:native_process_launcher_win.cc(140)] COMSPEC is not set

更新

通过Process Monitor调查chrome.exe进程时，我发现通过explorer生成COMSPEC环境变量时，没有可用的环境变量.

Upon investigating the chrome.exe process via Process Monitor, I found that there is no COMSPEC environment variable available to it when it is spawned via explorer.

还有其他可以尝试的东西吗?或者我在这里找不到的东西?

Is there anything else that I can try or something that I am missing here?

推荐答案

如日志中所述，由于COMSPEC是

As mentioned in the log, Chrome stumbles to start an external process, since COMSPEC, an environment variable pointing normally to cmd, is unset:

[11036:4160:0302/113902.866:ERROR:native_process_launcher_win.cc(140)] COMSPEC is not set

从cmd本身启动Chrome的行为有所不同，因为它会自行设置变量(生成的进程).

The behavior is different for launching Chrome from cmd itself, since it sets the variable for itself (ans spawned processes).

这可以通过使用 Process Explorer .

一个人可以以admin(例如从admin命令行)运行rundll32 sysdm.cpl,EditEnvironmentVariables以打开环境变量设置.
或者，可以从控制面板">系统和安全性">系统">高级系统设置">高级">环境变量..."中导航对话框.

One can run rundll32 sysdm.cpl,EditEnvironmentVariables as admin (e.g. from admin command line) to open the environment variable settings.
Alternatively, the dialog can be navigated to from Control Panel > System and Security > System > Advanced system settings > Advanced > Environment Variables...

ComSpec通常在系统变量中设置为

ComSpec is usually set in System variables to

C:\WINDOWS\system32\cmd.exe

根据需要进行调整，以进行系统安装.要应用此设置，您需要注销然后重新登录，或者最好重新启动系统.

Adjust as necessary for your system install. For this setting to apply, you need to log out and log back in, or better yet restart the system.

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