Error when running gpupdate "Windows could not evaluate the Windows Management Instrumentation for the Group Policy object"

When working with group policies, if you get this error, make sure that you are not setting up Security Filtering for let's say, "Authenticated Users" (which is the default for a new GPO) when you're trying to set computer-level group policy settings.

C:\Users\administrator>gpupdate /force
Updating Policy...

User Policy update has completed successfully.
Computer policy could not be updated successfully. The following errors were encountered:

The processing of Group Policy failed. Windows could not evaluate the Windows Management Instrumentation (WMI) filter for the Group Policy object cn={67E2A511-BE08-4F89-889A-D23517A22E},cn=policies,cn=system,DC=int,DC=domain,DC=com. This could be caused by RSOP being disabled  or Windows Management Instrumentation(WMI) service being disabled, stopped, or other WMI errors. Make sure the WMI service is started and the startup type is set to automatic. New Group Policy objects or settings will not process until this event has been resolved.

To diagnose the failure, review the event log or run GPRESULT /H GPReport.html from the command line to access information about Group Policy results.