WshShell.AppActivate doesn't seem to work in simple vbs script

I've tried it, too, and couldn't get it to work. There must be something about the window class, perhaps, where AppActivate doesn't see it as a top-level window?

In any event, AppActivate also lets you pass the process ID instead of the window title. When I installed HostsMan, the process name was hm.exe, so I'll use that in my example below.

Set Processes = GetObject("winmgmts:").InstancesOf("Win32_Process")For Each Process In Processes    If StrComp(Process.Name, "hm.exe", vbTextCompare) = 0 Then        ' Activate the window using its process ID...        With CreateObject("WScript.Shell")            .AppActivate Process.ProcessId            .SendKeys "%{F4}"        End With        ' We found our process. No more iteration required...        Exit For    End IfNext

The key here is to put a small pause after the 'run' command but before the 'appactivate' command so the application shows up in the process list.

     WshShell.Run "calc"     WScript.Sleep 100     WshShell.AppActivate "Calculator"

To solve the problem of AppActivate you have to use loop and if condition statement to check if the active windows is the target windows or not because sometime you deselect or the system deselect the target windows before execute the sendkeys directly so you got error.

I create this tight strict way

Set WshShell = CreateObject("WScript.Shell")    for i=0 to 300 ' this loop will continue about 30 sec if this not enough increase this number        Rtn=WshShell.AppActivate("HostsMan") ' HostMan have to be the windows title of application or its process ID        If Rtn = True Then             WshShell.SendKeys "%{F4}"    ' send key to click ALT+F4 to close             wscript.sleep 100        ' stop execute next line until finish close app            Rtn=WshShell.AppActivate("HostsMan")              If Rtn=False Then ' using nested If to sure of selected windows is false because its close                Exit For      ' exit for loop directly and execute what after for next             End If         End If        wscript.sleep 100    Next