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How to install/uninstall Windows and Office keys

This is a guide which describes the process of Windows/Office license key removal using a command prompt. It will work for all versions of Windows operating systems and Office suites.

How to uninstall/install Windows product key

In order to remove the key from the current computer, open search box and type: cmd.exe

Open cmd.exe with administrator rights, and type: slmgr.vbs /upk

The /upk parameter will uninstall the product key of the current Windows edition. Once this command is executed, you will need to restart the computer and the system will be in an unlicensed state unless a new product key is installed.

After restart open cmd.exe with administrator rights and type: slmgr.vbs /cpky

This command removes the product key from the registry to prevent the key from being stolen or taken by malevolent code. Once this command is executed, it will remove the product key from the registry if it's still there.

Close the command prompt and open the cmd.exe with administrator rights one more time and typeslmgr.vbs /rearm

This will reset the licensing status of the Windows OS as well as the activation state.

In order to install a new product key, type slmgr.vbs /ipk “Product-key” in cmd.exe opened with the administrator rights.

To force activate a new product key, type: slmgr.vbs /ato

If the forced internet activation fails, please check this Phone activation guide.

How to uninstall/install Office product key

Follow this guide to remove an Office suite product key using a command prompt. It will work for all versions of Office 2010, 2013 and 2016.

In order to remove the key from the current computer, open search box and type “cmd.exe”.

Open cmd.exe with administrator rights and type:

For 32-bit Windows (32-bit Office) and 64-bit Windows (64-bit Office):
cscript "C:\Program Files\Microsoft Office\Office15\OSPP.VBS" /dstatus

For 64-bit Windows (32-bit Office):
cscript "C:\Program Files (x86)\Microsoft Office\Office15\OSPP.VBS" /dstatus

The /dstatus command will display the last 5 digits of the currently installed product key on your computer.

In order to remove the key from the current computer, open search box, type cmd.exe, open cmd.exe with administrator rights and type:

For 32-bit Windows (32-bit Office) and 64-bit Windows (64-bit Office):
cscript "C:\Program Files\Microsoft Office\Office15\OSPP.VBS" /unpkey:XXXXX

For 64-bit Windows (32-bit Office):
cscript "C:\Program Files (x86)\Microsoft Office\Office15\OSPP.VBS" /unpkey:XXXXX

Instead of the XXXXX insert the last 5 digits of the currently installed product key.

Subsequently, to install a new product key, open search box, type cmd.exe, open cmd.exe with administrator rights and type:

For 32-bit Windows (32-bit Office) and 64-bit Windows (64-bit Office):
cscript "C:\Program Files\Microsoft Office\Office15\OSPP.VBS" /inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

For 64-bit Windows (32-bit Office):
cscript "C:\Program Files (x86)\Microsoft Office\Office15\OSPP.VBS" /inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

Write your new product key instead of XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. The activation will be finalized by opening any Office suite application and then either via internet or phone activation.

Note:
The \OfficeXY\ in all of the commands (e.g. C:\Program Files\Microsoft Office\Office15\OSPP.VBS ) stands for the following versions of Office suites:

Office14 – Microsoft Office 2010
Office15 – Microsoft Office 2013
Office16 – Microsoft Office 2016

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