How to Fix error codes that occur in Windows 8.1 Activation

Windows 8.1 is a PC operating system, made by Microsoft, and released as part of the Windows NT family of operating systems. Windows 8.1 is available as a free upgrade for Windows 8 and Windows RT users through a retail copy of the Windows store. It is designed to resolve complaints from Windows 8 users and reviewers at startup. There are many improvements in functionality compared to Windows 8.

Windows 8.1 Professional: Manually Activating

1. Go to Windows 8.1 UI.

2. Type cmd on the keyboard which will bring up the Windows 8 search.

3. Right-click on the Command Prompt app.

4. Click the Run as administrator button.

5. Click Yes if the Windows 8 UAC prompt is displayed.

6. Type in “cd \windows\system32” & Press Enter.

7. Type the cscript command (below) & press Enter: This should be done directly after “cd \windows\system32>”.)

cscript \windows\system32\slmgr.vbs /ato

8. How to interpret the Output Message:

1) If the Output Message IS Product activated successfully:

  • The Product Activation Is Complete!

2) If the Output Message IS NOT Product activated successfully:

  • Make a Note of the Error Code or Output Message.
  • Use this document to resolve Common Error Codes

How to fix windows 8.1 activation appear error code: 0xC004C003 ?

Reason for Error code: 0XC004C003

  • A damaged download or incomplete Windows 8.1 software installation.
  • Corruption in the Windows registry is from a recent software change related to Windows 8.1.
  • A virus or malware infection that has corrupted Windows system files or program files related to Windows 8.1.
  • Another program has maliciously or mistakenly deleted files related to Windows 8.1.

How to Fix Windows 8.1 error 0XC004C003

  • Repair Registry Entries Associated with Error 0xC004C003
  • Conduct a Full Malware Scan of Your PC
  • Clean Out Your System Junk (Temporary Files and Folders) With Disk Cleanup
  • Update Your PC Device Drivers
  • Utilize Windows System Restore to “Undo” Recent System Changes
  • Uninstall and Reinstall the Windows 8.1 Program Associated with Error 0xC004C003
  • Run Windows System File Checker (“sfc /scannow”)
  • Install All Available Windows Updates
  • Perform a Clean Installation of Windows

Free Windows 8.1 Product Key

Most activated Windows 8.1 you need a product key, consisting of a 25-bit serial number, you can go to the Microsoft Store to buy such as Amazon, ebay, etc., but I think that’s too expensive, I recommend you go to shopcdkey to buy it, it not only provides 100% genuine key, cheap price.  Here some free product key for windows 8.1 as follows:









Windows 8.1 Professional Activation Key


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