Windows 10: How to view your Windows Product Key with CMD (no third-party tools needed)

Hi everyone,
if you want to check your Windows Product Key without installing anything, just open Command Prompt as administrator and run this command:

reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform" /v BackupProductKeyDefault

You’ll see something like this:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform BackupProductKeyDefault REG_SZ XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

If nothing shows up, it means your Windows is activated with a digital license (linked to your Microsoft account or hardware), so there’s no visible Product Key stored in the registry.

submitted by /u/DragonPower008
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:)

 

Convert a Windows 8pro product key to a Windows 10pro produkt key

Hi Andre,

Thank you for contacting Microsoft community.

I suggest you to Uninstall the license using the following steps.

• Press Windows key + X
• Click Command Prompt (Admin)
• At the command prompt, type: slmgr.vbs -upk
• Press Enter, this will uninstall the product key from the computer.

Further on, install Windows 8.1 activate the copy with the product key on the new machine. Then again upgrade the same to Windows 10 using Window Update or Media Creation Tool.

Hope this information was helpful and do let us know if you need further assistance. We will be glad to assist.

 

Product Key

The article below will help you determine your product key:

• How to find Windows 10 product key: Your product key is important

Also refer to:

• Find your Windows product key

 

How to find which product key has been used for my installed Windows?


Windows 10 x64

As I have multiple retail license keys, I am unsure which one is in use right now.

There are 3rd party key finders that may show the key in use, but I prefer to obtain the key using Windows own tools, if possible. For instance using a CMD.
(Am uncertain about these 'key finders': can they be trusted?)

Any suggestions?

Thanks
=