(Fix & Solve) Windows activation error code 0xc004c020

Windows activation error code 0xc004c020 causes bad registry or missed Windows files. The issue is raised by every Window machine (MS Win OS – 7, 8 Vista, XP etc.). Apparent reason specified by machine Multiple Activation Key (MAK) is missing some system files. Intrinsically it seeks patching with specific missing. Updates are available in online mode provided by Microsoft itself. The Windows registry problem associated with the error may be in the form of other impairments viz. firmware failure, disconnection, incomplete installation of either update or Windows Operating System regardless of the versions constraints in fashion. Ultimately it produces Windows activation error code 0xc004c020 having missing tuning of DLLs. Usher should opt “Advanced System Repair tool” automatic tool to remove the error with some privilege over complex time consuming manual solutions.

Some manual solutions are applied by experienced users given below:

  1. Start>>Right Click >> Run >> SLUI 05 / Sluv.exe 4>>Enter
  2. Select native country name in the drop down menu
  3. Click on nearest location to United state >> next.
  4. Now find the phone number for the activation.
  5. PC is updated with new product key via phone
  6. While feeding the Product Key within few minutes PC error can be removed.


{Compatible with Windows 8, 7, XP, ME, Vista, 98, 2000 (32/64)
File Size: 4.9MB Download Time: <(dsl, 2sec, dialup 2min)>}

Conclusive Decision :

The manual steps for Windows activation error code 0xc004c020 removal is sufficient and effective. New or inexperienced user may face problem while applying these steps or getting another cause can choose a third party “Advanced System Repair tool”. It overlaps the manual solutions with new advancements viz. existing malware detection, virus detection and omission, defragmentation, faster cache execution, free technical support for new updates etc.


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