ChDir 只能将当前目录更改为同一个驱动器上的另一个目录 - 如果要切换，您需要首先使用 ChDrive 到不同驱动器上的文件夹。

ChDir will only work to change the current directory to another on the same drive - you need to use ChDrive first if you want to switch to a folder on a different drive.

更好的是，将完整路径传递给Shell，并跳过更改当前目录。

Better yet, pass the full path to Shell and skip changing the current directory.

Sub RunProcessor()
    If MsgBox("Run simulation?", vbYesNo) = vbYes Then
        Shell (ThisWorkbook.Path & "\runsims.exe")
    End If
End Sub