I run this job on my windows install
job_name => 'win_command_job',
job_type => 'EXECUTABLE',
number_of_arguments => 3,
job_action => 'C:\windows\system32\cmd.exe',
auto_drop => FALSE,
enabled => FALSE);
First time it runs it is successful, I run it a second time changing the directory name and it fails. I determined that I can create a new user account with administrators rights and the job works only the first time, but then every subsequent run it fails. It seems to be related to the credentials.