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How do I fix activation error code 0xC004E003?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The activation error code 0xc004e003 happens when the user tries to activate Windows, but the product key is invalid. The product key is either expired, or it has been used too many times. The product key can also be invalid if it was entered incorrectly.

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1. Restart your computer and try activating again

  1. Shut down your computer and wait 5 seconds.
  2. Turn on your computer and hold down the "Ctrl" key while you press the "F10" key.
  3. Select "Advanced Options" from the menu that appears.
  4. Under the " startup" tab, select "Restart."
  5. Select "Yes" to restart your computer.
  6. After your computer restarts, you will be prompted to enter your activation key. Enter the code 0xc004e003 and press "Enter."
  7. Click "OK" to restart your computer.

2. Contact Microsoft support

  1. Go to https://support.microsoft.com/en-us/help/403507/activate-windows-10-using-a-product-key
  2. On the page, enter your product key and click on Activate.
  3. If the activation process succeeds, you will be redirected to the activation page for your device.
  4. If the activation process fails, you will be redirected to a page that explains the error code and provides steps to try to fix it.

3. Try activating by phone

  1. Dial *#06# from your phone.
  2. Enter “Err 0xc004e003” into the keypad.
  3. Press the Call button.
  4. When prompted, enter your MSL activation code.
  5. Press the call button again.
  6. Listen to the prompts on the other line and follow the instructions.

4. Use the Microsoft Fix it Tool

  1. Launch the Microsoft Fix it Tool.
  2. Select the affected device from the list of devices.
  3. Click on the "Activation" tab.
  4. Click on the "Activation Status" button.
  5. Review the activation error code and possible solutions.
  6. Select a solution and click on the "Apply" button.
  7. If the activation is successful, the "Activation Status" button will change to "Activated".

5. Reinstall Windows

  1. Boot your computer from the Windows CD or DVD.
  2. Click "Start" and then "Settings."
  3. Click "System and Security."
  4. Click "Windows activation."
  5. If the activation error code is 0xc004e003, follow these steps: a. Click "More options." b. Click "Restart now." c. Click "Yes." d. Follow the prompts to restart your computer. e. Once your computer restarts, continue with the next step.
  6. If the activation error code is not 0xc004e003, follow these steps: a. Click "Start" and then "Settings." b. Click "System and Security." c. Click "Windows activation." d. Click "More options." e. Click "Update Windows." f. Follow the prompts to restart your computer. g. Once your computer restarts, continue with the next step.
  7. Click "Start" and then "Settings."
  8. Click "System and Security."
  9. Click "Windows activation."
  10. If the activation error code is 0xc004e003, follow these steps: a. Click "More options." b. Click "Restart now." c. Click "Yes." d. Follow the prompts to restart your computer. e. Once your computer restarts, continue with the next step.
  11. If the activation error code is not 0xc004e003, follow these steps: a. Click "Start" and then "Settings." b. Click "System and Security." c. Click "Windows activation." d. Click "Update Windows." e. Follow the prompts to restart your computer. f. Once your computer restarts, continue with the next step.