The issue generally occurs when hardware or software changes are done in the computer if the registry file of the activation of computer is modified or if the key file of the windows is corrupted you will receive Activation Error 0xc004c003. By repairing the windows for the computer will help you to fix this Windows 10 activation error or you may need to activate windows using the same key again however if the key is duplicate or invalid you may receive the same error again.
If you are not able to update windows and receiving error code 80072ee2 then you can read here How to Fix Windows 7 Update Error 80072ee2. But if you are not able to activate windows 10 and facing an error code 0xc004c003 you are required to follow instructions listed below in the blog.
Steps to Fix Windows 10 Activation Error Code 0xc004c003:
METHOD1: ACTIVATE KEYS
Step1: Tap windows Key and I button at the same time.
Step2: Press update & security button and press activation in opened tab.
Step3: Press activate button and select windows key by right click on option.
Step4: Choose command prompt in admin mode and type slmgr.vbs –rearm & press enter.
Step5: Now reboot the PC after completing command.
METHOD2: REINSTALL PREVIOUS VERSION
Step1: Press start button and choose settings option.
Step2: In settings click on update & security menu and press recovery option.
Step3: Now in recovery option select go back to windows 7/8 and Press get started button.
Step4: Follow on screen commands and after downgrading windows activate key first.
Step5: Reboot the system.
METHOD3: ACTIVATE AND UPGRADE WINDOWS
Step1: Repeat step1 of method2 and press update & security button.
Step2: Click check for update button and let the system install updates one by one.
Step3: You will receive upgrade option automatically, then accept agreement and proceed.
Step4: After upgrades check you key is valid now.
Call Windows Customer Support +1-888-588-4698 to Fix Windows 10 Error 0xc004c003
If you are not able to activate windows simply contact Windows 10 error support to get online support for the problem you are facing. You can get in touch to certified technicians and they will help you via remote sessions round the clock and provide instant support call now +1-888-588-4698 and get instant help.