How to Solve Windows 8 oxC004F061 Issue
After installing Windows 8 on your computer (clean install, not upgrade), if you're getting an error code: oxC004F061 when you try to activate Windows 8, it probably means that you're using a product activation key for an upgrade version of Windows 8. To solve the oxC004F061 issue, you need to install any previous versions of Windows on your computer, and then re-install an upgrade version of Windows 8.
Or you can try this way to solve Windows 8 oxC004F061 issue. If Windows 8 asks you to enter your product key, do not enter your key and uncheck. When you have reached the desktop, click "Start" button on the left bottom corner, type: "cmd".
Right click "cmd.exe", click "Run as administrator"
At the command prompt, type: "regedit". Go to:
Change its value to "0". Go back to the Command Prompt, type the following: "slmgr /rearm". Restart the computer and use the activate windows feature to re-enter your product key again. The oxC004F061 error may be solved.