Probably bugreport. See image attached. StartIsBack 2.1.1 Windows Server 2012 x64 I've enabled sleep in Windows' power options, but it's not added to the SiB menu. As you see, "Sleep" appears in configuration dialog, but if you select it there, the "Sign Out" option will be shown instead in main start menu (and it does what it says, sign out). So, the only way to put PC to the sleep mode, is to use Alt-F4 shutdown menu menu, and choose sleep there.