Specifies the lifetime (in hours) of the Group Policy Object (GPO) cache. Instead of re-downloading GPOs on every policy fetch, the system may reuse cached GPOs as long as their version does not change. This policy specifies the maximum duration for which cached GPOs may be reused before they are re-downloaded. Rebooting and logging out clears the cache.
If the policy is unset, cached GPOs may be reused for up to 25 hours.
If the policy is set to 0, GPO caching is turned off. Note that this increases server load since GPOs are re-downloaded on every policy fetch, even if they did not change.