3.2.2 Timers
Unless periodic refresh is disabled by Disable Periodic Refresh, the Group Policy client has the following timers:
Computer Periodic Refresh timer: This timer is triggered periodically to check for updated policy for the computer. The frequency of this timer is determined by the Computer Policy Refresh Interval.
User Periodic Refresh timer: This timer is triggered periodically to check for updated policy for each user interactively logged on to the computer. This timer is maintained separately for each interactively logged on user. The frequency of this timer is determined by the User Policy Refresh Interval.