Works great

If you have NSClient++ instead NRPE_NT, follow this instructions:
-Edit NSC.ini at nsclient folder.
-Below the line [NRPE Handlers] add this:
command[check_activedir]=cscript “C:Program FilesNagios
sclientscriptsCheck_AD.vbs” //nologo /test:$ARG1$

where “check_activedir” is the parameter that you pass from nagios with -c option, and “$ARG1$” are the services that you want check with -a option (separated by commas).

In Nagios, inside commands.cfg, you must put:
/usr/local/nagios/libexec/check_nrpe -H $HOSTNAME$ -c check_activedir -t TIMEOUT -a Replications,NetLogons,…..

Bye!