Configure Background Sync

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.


Supported on: At least Windows 7
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncEnabled
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

Configure background sync:

Sync Interval (minutes)

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncPeriodMin
Value TypeREG_DWORD
Default Value360
Min Value1
Max Value1440
Sync Variance (minutes)

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncMaxStartMin
Value TypeREG_DWORD
Default Value60
Min Value0
Max Value3600
Maximum Allowed Time Without A Sync (minutes)

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncIgnoreBlockOutAfterMin
Value TypeREG_DWORD
Default Value0
Min Value0
Max Value4294967295
Blockout Start Time (HHMM)

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncBlockOutStartTime
Value TypeREG_DWORD
Default Value0
Min Value0
Max Value2400

HHMM is a value where

HH must be between 0 and 24, and

MM must be between 0 and 59.

Blockout Duration (minutes)

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncBlockOutDurationMin
Value TypeREG_DWORD
Default Value0
Min Value0
Max Value1440
Enable Background Sync for shares in user selected "Work Offline" mode
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\NetCache
Value NameBackgroundSyncEnabledForForcedOffline
Value TypeREG_DWORD
Default Value0
True Value1
False Value0

offlinefiles.admx

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