Windows RTM Professional;ProfessionalN;Enterprise;EnterpriseN [MAK]
Windows 8 PRO / ENTERPRISE Offline Activation MAK Key
[Available telephone activation via SKYPE]

slmgr.vbs -ipk GNFT6-F8XPT-24KP8-82FMV-46V3P
slmgr.vbs -ipk 3NKP9-K2XW9-FQHWH-MDMCQ-TCKVC
slmgr.vbs -ipk KGQND-Q2HH6-XHXHC-89VWW-82KVC
slmgr.vbs -ipk 6CNK2-RTVRV-TXYQK-86DBM-B4DHC
slmgr.vbs -ipk F2V7V-8WN76-77BPV-MKY36-MKH3P
slmgr.vbs -ipk VG99Q-8NWVK-3BYKK-TGFF6-V49VC
slmgr.vbs -ipk BNYHR-XDRK6-HV96V-CFRJ9-H49VC
slmgr.vbs -ipk 876CN-G4J9P-HPQQQ-96R3V-XD4DP
[Tested working on 30 March 2013]

Windows 8 Pro Only Offline Activation RETAIL Keys [Retail Edition Only]:
slmgr.vbs -ipk VYNMB-TTBT3-MXCMQ-9389C-DC73H
slmgr.vbs -ipk 7ND2M-FT9K9-XBWW8-GWKJH-G6JXV
slmgr.vbs -ipk D9HNT-4CTWQ-RFTPB-932FC-MPWXV
slmgr.vbs -ipk H2H8R-NMCYW-78DHD-VPYTG-MKH3H

[Tested working on 30 March 2013]
***If any key failed try to use another one****
[This Keys are currently working also you can add feature WMC
[slmgr /ato] Product Activated Successfully

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Windows 8 RTM Pro WMC Offline Activation RETAIL Keys [Phone Activation Only]
slmgr.vbs -ipk 9XH48-BMCR3-N4WCY-RW4HC-P9T8D
slmgr.vbs -ipk 24224-D8T8C-FHNC2-8M2X9-C7GB3
slmgr.vbs -ipk 4G2TR-6M332-XF7KN-Y9D47-XD4FQ
slmgr.vbs -ipk 77WDD-K8YGN-34J6K-GDB7T-C9T8D
slmgr.vbs -ipk 9DDK9-CHX6M-D4FNH-Q94RM-2PKWD
slmgr.vbs -ipk 4VHHR-69NG8-3FC89-68DQQ-MDTB3
slmgr.vbs -ipk J7XVF-87X2N-KWWGY-BHQT3-B96B3
[Tested working on 30 March 2013]
***If any key failed try to use another one****

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All Credit To Original Keys Providers :)
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[More Info]:
http://www.warez-bb.org/viewtopic.php?t=15950523&start=0
NOTE: ***This Forum Topic Updated Daily***

=================================================================================
Microsoft Windows 8 Phone Activation Youtube Video Instruction
Windows 8 Permanent Offline Phone Activation:
http://www.youtube.com/watch?v=RwWudQusrP4

Windows 8 Pro With WMC Permanent Offline Phone Activation:
http://www.youtube.com/watch?v=z3W8_5VUvlk

PHONE ACTIVATION METHOD:
**You Need to Disable Internet for a start.**
1. Hold the Mouse on the left corner and Run Command Prompt (Admin)
2. Type this scrip and hit Enter
slmgr.vbs -ipk <Product Key>
Example of <Product Key>: XXXXX-XXXXX-XXXXX-XXXXX-6273P

3. Type this scrip and hit Enter you will get the Error [Ignore the error]
slmgr.vbs -ato

4. Go This Location >>> Control Panel\System and Security\System
and click View detail in Windows activation
5. Hit Activate by phone

6. Next will be choose Country Selection hit that then you come to confirmation ID

***Attention this part:
7a. Download skype FREE [If you do not have it yet]
Registrationis easy too all you need valid mail address
7b.  Dial UK number free call using skype [+448000188354] I strongly suggest use this number first
or
USA [+18664323012]

7c. First question are you home user or business ***[answer home user -dial1]*** Important
7d.Type installation ID without making mistake
7e. After second question how many computer you activated  ***[Only One Dial 1]***Important

8. Type correctly the confirmation ID giving by robot  in the confirmation ID boxes and enter the activation wizard finalize..

9. Check Activation remaine grace period:
slmgr.vbs /dlv

10. Check Volume activation expire
slmgr /xpr

Enjoy Your Microsoft Windows 8  :)