Specifies the minimum release age beyond which relaunch notifications are more aggressive. The age is calculated from the time the currently-running version was last served to clients.
If a new version is pending, a browser relaunch or device restart is needed, and the current version has been superseded for more than the number of days specified by this setting, the RelaunchNotificationPeriod policy is overriden to 2 hours. If the RelaunchNotification policy is set to 1 ('Required'), users will be forced to relaunch or restart at the end of the period.
If not set, or if the release age cannot be determined, the RelaunchNotificationPeriod policy will be used for all updates.