This is a machine-specific setting which applies to any user who logs onto the specified machine while this policy is in effect. This policy is in effect when a network folder is determined, as specified by the ?Configure slow-link mode? policy, to be in ?slow-link? mode. For network folders in slow-link mode, a sync will be initiated in the background on a regular basis, according to these settings, to synchronize the files in those shares/folders between the client and server. By default, network folders in the slow-link mode will be synchronized with the server every 360 minutes with the start of the sync varying between 0 and 60 additional minutes. You can override the default sync interval and variance by setting 'Sync Interval' and 'Sync Variance' values. You can also set a period of time where background sync is disabled by setting 'Blockout Start Time' and 'Blockout Duration'. To ensure that all the network folders on the machine are synchronized with the server on a regular basis, you may also set the 'Maximum Allowed Time Without A Sync'. You may also configure Background Sync for network shares that are in user selected Work Offline mode. This mode is in effect when a user selects the Work Offline button for a specific share. When selected, all configured settings will apply to shares in user selected Work Offline mode as well. If you disable this setting or do not configure it, the default behavior for Background Sync will apply. Fix: (1) GPO: Computer Configuration\Administrative Templates\Network\Offline Files!Configure Background Sync (2) REG: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\NetCache!BackgroundSyncEnabled