By default, Windows 7 and 8 will attempt to prevent system standby when connected to a remote share or file. This would be to prevent any ongoing file transfers over the network from failing due to the system unexpectedly entering standby. However, there may be many cases where the system is connected to a remote share and it is okay to enter standby.
The “Allow sleep with Remote Opens” power option setting lets you turn on or off to allow your machine to go to sleep when files opened remotely have not been written to.
This tutorial will show you how to add or remove the “Allow sleep with Remote Opens” setting under Sleep in Power Options for all users in Windows 7 and Windows 8.