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I recently installed Windows Server 2012. This will serve as the dev-instance for our engineers and will be accessed in multiple time zones. I therefore plan to run this 24x7 but want to conserve energy by going to sleep mode when not in use & enable Wake-On-Magic-Packet.

Based on the previous post it appears that there is no option to sleep Win Server 2012 with Hyper-V. Since I don't care much about virtualization now, I uninstalled Hyper-V.

In addition to this, I have done the following

1) Ran powercfg -a. Don't find sleep.

2) Added [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hvboot] "Start"=dword:00000003 to try gaining sleep - no luck!

3) Only see Shutdown and Restart in power options.

Please help me sleep and save the planet :-)


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If you want to save the planet then plant trees as compensation. And pay for "green" energy. – mailq Oct 2 '12 at 0:24

A server does not sleep. A workstation can sleep, but a sever must still be available for requests at any time. Otherwise it isn't a server.

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There is a way to sleep Windows Server 8.…. Is there something similar for 2012? – Ramesh Elaiyavalli Oct 2 '12 at 0:37
@Ramesh No. There isn't. – mailq Oct 2 '12 at 0:38
@mailq : a server can serve request at specific times, not all the times. You don't answer the question. – user162916 Mar 4 '13 at 23:49

I tried powercfg/hibernate ON in windows server 2012 Command Prompt with Admin rights. And now I see the hibernate option in "power options" in control panel.

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The only way this can be achieved is by going into the power settings, and changing the power plan to put the computer to sleep after, say, 2 minutes. It will then sleep as desired. Alas, this is a bit of a hassle and the reason I am looking for this answer now ;) It might be the case you need to get the Convert 2012 to Workstation executable for this (or manually follow the steps the makers of it list on the website) (see

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