IFPCCacheDrive::CacheLimitInMegs property

Applies to: desktop apps only

The CacheLimitInMegs property gets or sets the disk size allocated to the cache.

This property is read/write.


HRESULT put_CacheLimitInMegs(
  long lLimit

HRESULT get_CacheLimitInMegs(
  long *plLimit

Property value

A 32-bit integer that specifies the disk size allocated to the cache, in megabytes.

Error codes

These property methods return S_OK if the call is successful; otherwise, they return an error code.


This property is read/write. Its default value is 0.

Setting this property to a nonzero value for any drive automatically enables the cache. To disable the cache, the CacheLimitInMegs property must be set to 0 for all drives.

After you change the cache allocation, the change must be written to persistent storage by calling the Save method on the FPCCacheDrives collection or on an object that contains this collection as a subobject, and the Microsoft Firewall service must be restarted for the change to take effect. For more information about restarting the Firewall service to apply changes, see Restarting Services After Configuration Changes.


Minimum supported client

Windows Vista

Minimum supported server

Windows Server 2008 R2, Windows Server 2008 with SP2 (64-bit only)


Forefront Threat Management Gateway (TMG) 2010





See also




Build date: 7/12/2010