Allow Automatic Sleep with Open Network Files. If you enable this policy setting, the computer will automatically sleep when network files are open. If you disable this policy setting, the computer will not automatically sleep when network files are open. Fix: (1) GPO: Computer Configuration\Administrative Templates\System\Power Management\Sleep Settings!Allow Automatic Sleep with Open Network Files (On Battery) (2) REG: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Power\PowerSettings\d4c1d4c8-d5cc-43d3-b83e-fc51215cb04d!DCSettingIndex