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Knowledge Base

Server reboot every hour by himself

Publication Date:  2017-12-30  |   Views:  1452  |   Downloads:  0  |   Author:  a84065575  |   Document ID:  EKB1001175616


Issue Description

Customer report that the server reboot each hour by himself

Alarm Information

The Server reboot by himself

Handling Process

We review the hardware logs, but we did not find any hardware exception in BMC log, we ask customer what OS is installed, customer confirm Windows Server 2012 R2 Standard Trial Version

Root Cause

From the Microsoft web page we can find out that the trial version has limitation after the trial period finish the server if the license is not activated the OS will reboot or power off by himself every hour.

More detail here


Customer need to apply the license key for the in the OS and run the full version, after we help customer to active by command line the OS, the server didn’t reboot again.

We use the next command to active the license:

Disclaimer; when using this command, if the OS version is not the corresponded with license the system can enter bootloop, need make sure that the OS version and the installation media is the same with the license key.

DISM /online /Set-Edition:<edition ID> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula


Before start to install any service or application in the server customer should activated the OS otherwise customer can find that he install the incorrect version for the license he buy and they need to reinstalled.