Windows 8/8.1 Activation via CMD

Win8_8.1Activation

WARNING : Internet connection is required !

=============================
Select your win license key
=============================
W8 Core: 
BN3D2-R7TKB-3YPBD-8DRP2-27GG4

W8 Core Single Language:
2WN2H-YGCQR-KFX6K-CD6TF-84YXQ

W8 Professional:
NG4HW-VH26C-733KW-K6F98-J8CK4

W8 Professional N:
XCVCF-2NXM9-723PB-MHCB7-2RYQQ

W8 Professional WMC:
GNBB8-YVD74-QJHX6-27H4K-8QHDG

W8 Enterprise:
32JNW-9KQ84-P47T8-D8GGY-CWCK7

W8 Enterprise N:
JMNMF-RHW7P-DMY6X-RF3DR-X2BQT

W8.1 Core:
M9Q9P-WNJJT-6PXPY-DWX8H-6XWKK

W8.1 Core N:
7B9N3-D94CG-YTVHR-QBPX3-RJP64

W8.1 Core Single Language:
BB6NG-PQ82V-VRDPW-8XVD2-V8P66

W8.1 Professional:
GCRJD-8NW9H-F2CDX-CCM8D-9D6T9

W8.1 Professional N:
HMCNV-VVBFX-7HMBH-CTY9B-B4FXY

W8.1 Professional WMC:
789NJ-TQK6T-6XTH8-J39CJ-J8D3P

W8.1 Enterprise:
MHF9N-XY6XB-WVXMC-BTDCT-MKKG7

W8.1 Enterprise N:
TT4HM-HN7YT-62K67-RGRQJ-JFFXW
=============================

Open Command Prompt as administrator

slmgr /ipk <<yourlicensekey>>       --> Enter (Wait for a few seconds, and a prompt should appear.)
slmgr /skms kms8.msguides.com   --> Enter (Wait for a few seconds, and a prompt should appear.)
slmgr /ato                      --> Enter (Wait for a few seconds, and a prompt should appear.)

Check the activation status.