This policy setting controls Event Log behavior when the log file reaches its maximum size. When this policy setting is enabled and a log file reaches its maximum size, new events are not written to the log and are lost. When this policy setting is disabled and a log file reaches its maximum size, new events overwrite old events. Note: Old events may or may not be retained according to the "Backup log automatically when full" policy setting. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Event Log Service\System\Retain old events (2) REG: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\EventLog\System!Retention