If there are no changes to group policy, the client computer refreshes security policy setting every 16 hours plus a randomized offset of up to 30 minutes. When this refresh occurs, the Application event log contains:

Event Type: Information                              Event Source: SceCli                              Event Category: None                              Event ID: 1704                              Date: MM/DD/YYYY                              Time: HH:MM:SS                              User: N/A                              Computer: <Computer Name>                              Description: Security policy in the Group policy objects are applied successfully.
To alter the default frequency, set the MaxNoGPOListChangesInterval Value Name at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\\{827D319E-6EAC-11D2-A4EA-00C04F79F83A\}.

The default is 0x3c0, 960 minutes (16 hours).

To set the MaxNoGPOListChangesInterval to 7 days, using REG.EXE, built into Windows XP, and Windows Server 2003, or REG.EXE from the Windows 2000 Support Tools on the CD-ROM:

REG ADD "HKLM \SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\\{827D319E-6EAC-11D2-A4EA-00C04F79F83A\}" /V MaxNoGPOListChangesInterval /T REG_DWORD /F /D 0x2760

NOTE: See Windows 2000 Group Policy refresh.