Policy
Set percentage of disk space used for client computer cache
Windows 11 25H2
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016
This policy setting specifies the default percentage of total disk space that is allocated for the BranchCache disk cache on client computers. If you enable this policy setting, you can configure the percentage of total disk space to allocate for the cache. If you disable or do not configure this policy setting, the cache is set to 5 percent of the total disk space on the client computer. Policy configuration Select one of the following: - Not Configured. With this selection, BranchCache client computer cache settings are not applied to client computers by this policy. In the circumstance where client computers are domain members but you do not want to configure a BranchCache client computer cache setting on all client computers, you can specify Not Configured for this domain Group Policy setting, and then configure local computer policy to enable BranchCache client computer cache settings on individual client computers. Because the domain Group Policy setting is not configured, it will not over-write the client computer cache setting that you use on individual client computers. - Enabled. With this selection, the BranchCache client computer cache setting is enabled for all client computers where the policy is applied. For example, if Set percentage of disk space used for client computer cache is enabled in domain Group Policy, the BranchCache client computer cache setting that you specify in the policy is turned on for all domain member client computers to which the policy is applied. - Disabled. With this selection, BranchCache client computers use the default client computer cache setting of five percent of the total disk space on the client computer. In circumstances where this setting is enabled, you can also select and configure the following option: - Specify the percentage of total disk space allocated for the cache. Specifies an integer that is the percentage of total client computer disk space to use for the BranchCache client computer cache. * This policy setting is supported on computers that are running Windows Vista Business, Enterprise, and Ultimate editions with Background Intelligent Transfer Service (BITS) 4.0 installed.
Registry values
How enabled and disabled states update the registry.
No explicit registry values are set for enabled or disabled states.
Policy elements
Inputs and configuration options exposed by this policy.
| Element | Type | Registry mapping | Constraints & behavior |
|---|---|---|---|
WBC_Cache_Size_Percent_dctxtbox ID WBC_Cache_Size_Percent_dctxtbox | decimal | HKLM\SOFTWARE\Policies\Microsoft\PeerDist\CacheMgr\Republication\SizePercent Type REG_DWORD | Range: 1 to 100 |
Other policies in this category
Explore related policies at the same level.
- ComputerConfigure BranchCache for network filesAt least Windows Server 2008 R2 or Windows 7
- ComputerConfigure Client BranchCache Version SupportAt least Windows Server 2012, Windows 8 or Windows RT
- ComputerConfigure Hosted Cache ServersAt least Windows Server 2012, Windows 8 or Windows RT
- ComputerEnable Automatic Hosted Cache Discovery by Service Connection PointAt least Windows Server 2012, Windows 8 or Windows RT
- ComputerSet age for segments in the data cacheAt least Windows Server 2012, Windows 8 or Windows RT
- ComputerSet BranchCache Distributed Cache modeAt least Windows 7 or Windows Server 2008 R2*
- ComputerSet BranchCache Hosted Cache modeAt least Windows 7 or Windows Server 2008 R2*
- ComputerTurn on BranchCacheAt least Windows 7 or Windows Server 2008 R2*