Very Nice script!

For those who have NSClient 0.4.1 +

1) Place check_windows_updates.ps1 in NSclient “scripts” folder

Copy these lines in nsclient.ini :

[/settings/external scripts/scripts]

check_updates = cmd /c echo scriptscheck_windows_updates.ps1; exit($LastExitCode) | powershell.exe -command –

2) In nagios put your command line like this :

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c check_updates

Hope this could help someone.