I wrote down the steps in the thread but let me write down here for you:
First of all you have to have a Windows 8 Pro copy activated by a KMS. No hackivator should be used. Now follow the step by step guide:
1. Right click on the Windows 8 Pro KMS .bat file and click edit.
2. You will see a written IP there, replace it with "win8kms4.mooo.com" and save the file
3. Now run the .bat file while connected to the internet.
4. Voila, you now have Windows 8 Pro activated by KMS, now use the method abobobilly wrote a few pages ago and you will have fully working Windows 8 Pro WMC activated by Microsoft itself.
Again, remember now other cracks should be installed on your Windows 8 Pro copy or it won't work and your welcome