Uninstall program on remote machine -

Question

All,
I am trying to uninstall an application on a WYSE 32bit Windows Embedded device.  I am unable to use WIn32_product and have to Win32Reg_AddRemovePrograms.  I can query the device remotely fine with the following command
PS C:\> get-wmiobject -Class Win32Reg_AddRemovePrograms -ComputerName rob_wyse | where {$_.Displayname -like "blah*"} | select ProdID | fw
{548B747B-9B82-4FA7-91C8-15C8E8B053B1}
My issue is I want to capture the output of the ProdID into a variable and then use invoke-command to call MsiExec to uninstall the program.  Below is what I have thus far..I was trying to use
the "outVariable" with hopes that I could use Invoke-Command -ComputerName rob_wyse "MsiExec.exe /norestart /q/x '$prid'" to run the uninstall with MSIEXEC.
What is the best way?  Where am I going wrong?
get-wmiobject -OutVariable prdid -Class Win32Reg_AddRemovePrograms -ComputerName rob_wyse | where {$_.Displayname -like "Blah*"} | select ProdID | fw
Invoke-Command -ComputerName rob_wyse "MsiExec.exe /norestart /q/x '$prid'"
Thanks for the help.
Rob
Thank you for your help and time, Robert Jaudon

Answer 1

You could try using psexec instead of invoke-command, but you wouldn't be able to execute the get-wmiobject command.  Is powershell even installed on it?
In your script do this:
$prodid = (get-wmiobject -OutVariable prdid -Class Win32Reg_AddRemovePrograms -ComputerName rob_wyse | where {$_.Displayname -like "Blah*"} | select ProdID).ProdId
start-process psexec -argumentlist "-accepteula \\rob_wyse msiexec /X$ProdID /q /norestart" -PassThru
This assumes you've installed psexec to system32 and is in your path, otherwise add the full path and filename in place of just 'psexec'
Psexec info and download:
http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx
Good luck!