Upgrading Windows 8.1 Windows Media Center Over Activated Windows 8.1 Pro

Step By Step Instruction:
Instruction assuming you are on Upgradable & Activated Windows 8.1 Pro in this instruction more detail about it on the explanation above.
 
1. Go To Control Panel\System and Security\System
 

 
Click on Get More Features with a new edition of Windows
 
2. Click I already have a product key.
 

 
3. Enter Your WMC Promotional Product Key [If you still have Promotional WMC Keys best to use it if you don't then Use the keys below: (Run this Command in Command prompt with Admin Permissions)

1. slmgr.vbs -ipk GT9MK-7MF6N-FXPD6-48P3J-PJ8Y3
2. slmgr.vbs -ipk H47P2-YMKNW-BCBM6-Y8RD9-DYFFQ
3. slmgr.vbs -ipk KQJJJ-CTT6D-MHQTB-ND3YR-CRYRQ
4. slmgr.vbs -ipk YWBGW-3GDN7-MJBRV-8CCBF-F6V4Q
5. slmgr.vbs -ipk D76PG-G9R2T-G7NRW-KRYCJ-QC74Q
6. slmgr.vbs -ipk JCT6Y-GHGNJ-QCQT6-2V3B7-WK6B3
7. slmgr.vbs -ipk F9DKY-W4Y6G-N434R-H4X6V-46V4Q

 
 
4. Tick accept the license terms and click Add Features
 
 

 
 

 
5. Windows will add the WMC Features and after done your PC will Restart
 
6. Your WMC still not Activated even you add the key earlier that was for add features Installation therefore we need to activate the same key we already use for Installation.!

How To Activate Windows 8/8.1 RTM Via Phone - [Permanent Windows Activation]

Tutorial Video: 

Step By Step Process:

1. Disable Internet Connection Not Necessary!

2. Right click the start menu and choose "command prompt (admin)" - WINDOWS+X

3. Type this script and hit Enter
slmgr.vbs -ipk <ProductKey>
Example of <Product Key>: XXXXX-XXXXX-XXXXX-XXXXX-6273P

Few Working Keys Listed Below:

Windows 8.1 RTM Pro Offline Activation RETAIL Keys (Type This Below Commands in CMD Prompt as shown below):

slmgr.vbs -ipk NT8WP-BH8HQ-VBD32-KMQHT-234DH    [Windows 8/8.1 Pro Retail Key for 8/8.1]

slmgr.vbs -ipk HVMN3-7XHVG-Y4M4Q-C9G6F-VMGTM    [Windows 8/8.1 Pro Retail Key for 8.1 only]

Windows 8.1 RTM Pro Offline Activation RETAIL Keys:

4. Right click the start menu and choose "command prompt (admin)Type slui 4 in the command prompt then click NEXT.(Select United Kingdom on Drop Down Menu)

5. Next you will get installation ID in this step.

6. Use Skype Free Microsoft Call Center to Get Confirmation ID....
**Make sure have a microphone plugged into your pc in order for the dial pad to work!**

Step By Step Dealing Activation Center and Answering the Question Right.....
Use UK Activation Center - [+18885712048]:
During call these is all Question you will be asking:

After second question how many computer you activate using this key ***[Only One Dial 1]***Important

Q: Are you calling to activate windows xp [Even you are not on XP say yes to all other home user MS Product activation]
A: Dial 1 with your touchpad / keypad

Q: Are your computer with activation windows open
A: Dial 1 with your touchpad / keypad

Then Robot will ask your Installation ID
Q: Please say or enter the digit in group one..
A: Just enter 7 digits of 9 group using your keypad one at the time just after the command of Robot!
Group 1: XXXXXXX till group 9.

Q: How Many times did you install this key
A: Just Enter -  0 (Zero) 

Q: Are you ready for me to give you first part of Confirmation ID
A: Dial 1 with your touchpad / keypad

7. Just type Confirmation ID giving by Robot into Windows Wizard on Confirmation ID Screen from A Till H without making any mistake

8. Click Activate Windows.......

9. Check your activation status and genuine
Right click the start menu and choose "command prompt (admin)
slmgr /ato

Other Command Activation Check Prompt
Check Activation remain grace period: slmgr.vbs /dlv 
Check Volume activation expire slmgr /xpr

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