opatch prereq CheckActiveServices

I'm unable to get opatch prereq CheckActiveServices to complete on my Windows server. Am I missing a switch?

C:\app\oracle11g\product\11.2.0\dbhome_1\OPatch\opatch prereq CheckActiveServices

Oracle Interim Patch Installer version 11.2.0.3.12

Copyright (c) 2016, Oracle Corporation.  All rights reserved.

PREREQ session

Oracle Home       : C:\app\ORACLE~1\product\112~1.0\dbhome_1

Central Inventory : C:\Program Files\Oracle\Inventory

   from           : n/a

OPatch version    : 11.2.0.3.12

OUI version       : 11.2.0.4.0

Log file location : C:\app\ORACLE~1\product\112~1.0\dbhome_1\cfgtoollogs\opatch\

opatch2016-08-11_16-37-52PM_1.log

Invoking prereq "checkactiveservices"

Prereq "checkActiveServices" is not executed.

The details are:

Failed to execute the command.

OPatch failed with error code = 2