how to display popup window from windows service running a powershell script

Question

i wrote a posh script running in a windows service. From specific action on the computer, I need to display a popup window warning the user.

$popupMsg = @" message "@   
[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[System.Windows.Forms.MessageBox]::Show($user+ $popupMsg,"Remote Connection Information","OK","Warning")

When I run this script from PowerGui, the popup displays fine, but when i run the windows service that runs this script, the popup won't show up. What's wrong in this ? Thanks people !

Services are by definition non-interactive. To display a dialog from one, you would have to invoke a foreground script, with the above. — Anirudh Ramanathan
– Anirudh Ramanathan, Commented Sep 6, 2012 at 7:59

manojlds · Accepted Answer · 2012-09-06 08:17:00Z

1

Try setting "Allow service to interact with desktop" in the Service settings:

enter image description here

answered Sep 6, 2012 at 8:17

manojlds

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Henry Meyer Over a year ago

I cannot do that as I'm using the 'This account' option to specify an applicative logon wich is allowed to run the service

CoreTech · Accepted Answer · 2012-09-06 12:26:13Z

1

What version of Windows do you wish to support? Session 0 Isolation will prevent you from showing any kind of GUI on a user's desktop on Vista and beyond.

answered Sep 6, 2012 at 12:26

CoreTech

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2 Comments

Henry Meyer Over a year ago

unfortunately I'm using essentially Win 7 and just a little bit of win xp... So I guess there's no solution for me then... What about asking my service to launch a .exe file when timer tick ? Would that do the trick ?

CoreTech Over a year ago

Launching an exe in the user's session is an option but may be overkill. If you can figure out the ID of the user's session, you can use WTSSendMessage to display a message box there.

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