OVH Guide

Correction of the Windows activation key

Find out here how to correct the activation of your Windows if the key was incorrectly installed.


When installing a Windows Server operating system, if the activation key has not been installed correctly, your system will be upgraded to a trial version for a 120 days period. After which it will be disabled.

To follow this guide, you will need to :

  • Have a server installed under Windows.
  • Have a Windows activation fault.
  • Have remote access to the office.
  • Access to the "Run" utility.


Step 1 : Remove previous key

When your system is in trial version, a default key is installed.

To remove it, you need to open the "Run" utility.


In this utility, complete the following command :

cscript.exe c:\windows\system32\slmgr.vbs -upk

Step 2 : Add the new key

Once the previous key has been deleted, you can add the new key.

To do this, go to the "Run" utility as seen previously, fill in the following command:

cscript.exe c:\windows\system32\slmgr.vbs -ipk KMS KEY

|---|---| |KMS KEY|The key for your Windows system is available in the table below|

KMS Keys

Operating system KMS Keys
Windows Server 2008 Standard TM24T-X9RMF-VWXK6-X8JC9-BFGM2
Windows Server 2008 Entreprise YQGMW-MPWTJ-34KDK-48M3W-X4Q6V
Windows Server 2008 Datacenter 7M67G-PC374-GR742-YH8V4-TCBY3
Windows Server 2008 R2 Standard YC6KT-GKW9T-YTKYR-T4X34-R7VHC
Windows Server 2008 R2 Entreprise 489J6-VHDMP-X63PK-3K798-CPX3Y
Windows Server 2008 R2 Datacenter 74YFP-3QFB3-KQT8W-PMXWJ-7M648
Windows Server 2012 Standard XC9B7-NBPP2-83J2H-RHMBY-92BT4
Windows Server 2012 Datacenter 48HP8-DN98B-MYWDG-T2DCC-8W83P
Windows Server 2012 R2 Standard D2N9P-3P6X9-2R39C-7RTCD-MDVJX
Windows Server 2012 R2 Datacenter W3GGN-FT8W3-Y4M27-J84CP-Q3VJ9
Windows 8.1 Pro GCRJD-8NW9H-F2CDX-CCM8D-9D6T9
Windows Server 2016 Datacenter CB7KF-BWN84-R7R2Y-793K2-8XDDG
Windows Server 2016 Standard WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
Windows Server 2016 Essentials JCKRF-N37P4-C2D82-9YXRT-4M63B

Source : Microsoft MSDN

The CORE versions use the same KMS keys as the non-CORE versions.

Step 3 : Use

In order to associate your key with our activation robot, you must use the command below in the "Run" utility.

cscript.exe c:\windows\system32\slmgr.vbs -skms

Step 4 : Enable System

Finally, to activate your Windows system, you now have to use the following command :

cscript.exe c:\windows\system32\slmgr.vbs -ato