Windows 10 November Update: Activate OS using your Windows 7 and 8 Product Keys

To get started open the Settings app and go to System > About.

Click on Change product key or upgrade your edition of Windows.

That will open the Settings > Update & Security > Activation page.

Click on Change product keyand accept the subsequent UAC prompt.

This new window will pop up and you just enter your current Windows 7 or 8 product key.

As soon as the entire sequence is entered the system will immediately go online to validate the product key.

Product key being validated.

Once the product key is validated you will need to click Next to finish the activation process.

Once activation is successful just click Close and your system is now activated directly using your Windows 7/8 product key.

Updated : Windows 10 product keys

Windows 10 Enterprise: CKFK9-QNGF2-D34FM-99QX2-8XC4K

Windows  10 Serial Key: NKJFK-GPHP7-G8C3J-P6JXR-HQRJR

Windows  10 Serial Key Technical Preview for Consumer: 334NH-RXG76-64THK-C7CKG-D3VPT

Technical Preview for Enterprise: PBHCJ-Q2NYD-2PX34-T2TD6-233PK

Windows 10 Home: KTNPV-KTRK4-3RRR8-39X6W-W44T3
Windows 10 Pro: 8N67H-M3CY9-QT7C4-2TR7M-TXYCV

If none works then try – VK7JG-NPHTM-C97JM-9MPGT-3V66T

Fill the keys when asked during installation or later, if you skip the step during windows installation. More source: http://bit.ly/1sjdqd7

How to upgrade windows 10

If your computer can not get a free upgrade to win 10, I think you need a genuine product key to upgrade it. Here is what I share some of the secret key used for free for everyone. If it does not work. Can visit: http://goo.gl/ELtuZZ

Win 10 Home Key
TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
3KHY7-WNT83-DGQKR-F7HPR-844BM
7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH
PVMJN-6DFY6-9CCP6-7BKTT-D3WVR

Win 10 Professional Key
W269N-WFGWX-YVC9B-4J6C9-T83GX
MH37W-N47XK-V7XM9-C7227-GCQG9

Win10 Enterprise Key
NPPR9-FWDCX-D2C8J-H872K-2YT43
DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4
WNMTR-4C88C-JK8YV-HQ7T2-76DF9
2F77B-TNFGY-69QQF-B8YKP-D69TJ