Software: Oracle Shutdown

I was trying to shutdown an Oracle server on my Windows test computer. Whenever I try to enter my credentials in the Oracle Enterprise Manager console, I get this message: RemoteOperationException: ERROR: Wrong password for user. Oracle's online help was utterly useless because it just describes exactly what I could see with no explanation or tips. I checked on Google and I found this thread. Message 173817 explains what to do, which is to allow my credentials to be used for running a batch job on Windows.