Serial key for Microsoft Windows 10 Enterprise:
NPPR9-FWDCX-D2C8J-H872K-2YT43

Microsoft Windows 10 Enterprise Edition
VK7JG-NPHTM-C97JM-9MPGT-3V66T

Microsoft Windows 10 Pro Edition serial number
VK7JG-NPHTM-C97JM-9MPGT-3V66T

Serial key for: Microsoft Windows 10 Pro install keys

FJT8C-2WNKT-DKPQG-JYHXD-YBFFC 
X4XQN-VMKJH-7TCVD-TB3QT-KTPKM 
3MXN9-Y96QV-RPYHW-RKQQJ-XW3GY
NFKWT-HFWJW-93DP7-M3GMQ-FM49M
NVTPG-P4YBM-KDH2X-GHQ99-66PKM 
NF3RK-PHM7C-8743J-X2X92-J44DB 
YW9TN-9M6H7-MKTJ4-H7FQW-4VV3B 
NCH3J-3Y32T-QY4Y9-4CDK3-C3726
N24DD-FGXK3-2RWYX-6D87B-HT672  

*These are NOT activation keys.  They will only work to install windows 10.  To properly activate windows 10, you have to first upgrade from an activated version of windows 7, 8, or 8.1 and then after successful upgrade, do a clean installation of windows 10.  FYI: you can choose to skip the product key when installing windows 10 with clean installation and it will be activated automatically if you previously upgraded to windows 10 from windows 7, 8, or 8.1 on same computer.  Basically these keys are just used for installing or if you want to change your product key after windows has already been activated.

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Microsoft Windows 10 Pro (10.0.10240 Build 10240)
W269N-WFGWX-YVC9B-4J6C9-T83GX

Microsoft Windows 10 Home Edition serial number
TX9XD-98N7V-6WMQ6-BX7FG-H8Q99

Windows 10 x64 enterprise edition serial number
NPPR9-FWDCX-D2C8J-H872K-2YT43