This configuration parameter specifies whether to use all processors on a multi-processor system. The parameter value can be true or false. Setting this parameter to true allows the adclient process to use additional CPUs on a computer to process background tasks in parallel when logging on and can significantly decrease the startup time in sites with a large number of domain controllers.
If the parameter is not explicitly defined in the configuration file, its default value is true. If you change this parameter, you must restart the adclient process for the change take effect.
In most cases, you set this configuration parameter using group policy. You can, however, set it manually in the configuration file if you are not using group policy or want to temporarily override group policy.