Top 6 Methods To Repair Activation Error Code 0xc004c003 Product Key Blocked

Methods To Repair Activation Error Code 0xc004c003 Product Key Blocked

Same as the Windows 7 and 8.1 the latest version of the operating system i.e. Microsoft Windows 10 fetches the attention of the millions Windows users.

But Errors and bugs disappointing several users, engineers of Microsoft already fixed lots of the issues and still working to stabilize many other latest errors.

Among many errors, one of the common errors that are in trend nowadays is Error code 0xC004C003. This is actually an Activation error, says that server resolute the keys to be invalid or keys are blocked.

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While upgrading to the Windows 10 from Windows 7 or 8.1 then you don’t have to face such errors. This error may appear on those computers or laptops who are trying to install the Windows 10.

Causes of Error code 0xC004C003

The main cause of this error is, Windows Servers are over packed. If your computer is suffering from this error then wait for one fine day and you will see that windows get activated.

Fixing Error code 0xC004C003

Method 1: Try to Reset your PC.

By simply resetting your computer or laptop you can fix this issue. Generally, this solution is not very effective but it is recommended that try it once. Apply the below-given steps.

Step 1: Click on the Start button-> go to Settings

Step 2: Click on the Update and Security option.

Step 3: After it on the left Pane go to Recovery.

Step 4: Reset this PC Option” will appear, so click on Get Started.

Step 5: It will take a few times to complete the entire resetting process.

Note:  The resetting process will delete the entire files/Folders from the system drive or the drive where Windows 10 is installed. So, create a backup of your Files before performing the above steps.

Method 2: Use Command Prompt

In this method, we will try to fix the Error code 0xC004C003 with the help of executing a command in the Command Prompt.

Step 1: Press the Windows + X to and choose the Command Prompt (Admin).

Step 2: After opening the command prompt, type the wmic path SoftwareLicensingService get OA3xOriginalProductKey command and press the Enter key. This command will display your product key.

Step 3: Now, open the Settings App by pressing the Windows Key + I and then go to the Update & Security section.

Step 4: Now, go to the Activation section present at the left pane and select the Change the product key from the right pane.

Step 5: At last, you have to enter the product key that you noted from Step 2 and at last click on the Next.

Also Read: Top 6 Methods to Fix ‘There’s nothing to record’ Game Bar Message on Windows 10

Method 3: Installing Windows 7/8/10 then Upgrade.

In this method you have to install Windows 8.1 or Windows 7 again and after it tries to upgrade your PC to Windows 10.

After upgrading to Windows 10, now you can attempt to do a clean install. Follow below-given steps.

Step 1: Insert your Windows Installation CD/DVD, make sure that you have a valid Product Key of the CD/DVD.

Step 2: Start your PC through DVD (you can set the priority through BIOS).

Step 3: Install Windows 7 or 8/8.1.

Step 4: Confirm that version of Windows you just installed is activated, after it if you want to upgrade to Windows 10 then download the entire available updates. Through this, you can see Windows 10 upgrade notification in the tray.

Step 5: If your system doesn’t show Windows 10 upgrade notification then you have to Download Windows Media Creation Tool from Microsoft. 

Step 6: After it executes the tool and Use Upgrade this PC feature so that it will download Windows 10.

Step 7: After the completion of the Installation process you have an activated Windows 10 operating system without any activation error like 0xC004C003.

Method 4: Clean Booting of Computer

Step 1: First of all, you need to RUN Windows and then enter in the command box “msconfig” and then click OK.


Step 2: After this, you are required to open the General tab and then click selective startup and then there is a need to simply clear the Load Startup Items search box.


Step 3: Now, you have to click the services tab and then select the “Hide all Microsoft Services” checkbox.


Step 4: At last, you have to click Disable all and then click OK.

Method 5: RUN an SFC scan

Step 1: In the first step, you have to open cmd as administrator

Step 2: Now type in SFC/Scan now and press enters and then simply wait for the process’s completion.

Step 3: This process will take some time and if it shows any errors in the result history then you have to do a proper action which is suitable to the error.

Step 4: The SFC/scan now command will then scan the protected system files. It will then replace file that is corrupted with a cached copy located in the folder named compressed at %Win Dir%\System 32\dllcache.


The %Win Dir% placeholder will represent the Windows operating system folder. As for example, C:\Windows.

IMPORTANT: Make sure that you don’t close the Command Prompt Windows unless the verification in done 100%. The scan result will then display after the process is finished.

Method 6: Ping The Network Starts With The Microsoft Servers


Step 1: For this, you have to first click on the Start menu and the search the command prompt.

Step 2: Now after the CMD prompt windows get opened, you have to type the below command:

                              NS lookup

Step 3: In the last step, you can replace office365 with the versions you have and the result should be the address of the Microsoft servers.


Above given methods will help you to resolve Application Error code 0xC004C003 and make your Windows 10 PC or laptop error-free, some of them are a little difficult and risky so be aware while executing them. You may also use an automatic solution i.e. PC Error Repair Tool.

This application is specially designed to deal with any types of internal error without the need of any professional skill. It means now you can enhance your PC performance by fixing all errors without going to any computer repairing shop.

Follow 3 Simple Steps to Repair PC Instantly!

Step 1 – Download & Install PC Repair Tool.

Step 2 – Click “Scan” button to diagnose the PC.

Step 3 – Click “Fix Errors” to the fix the issues and you are done.

(Note: This powerful tool can increase your performance by 97%)

Top 6 Methods To Repair Activation Error Code 0xc004c003 Product Key Blocked
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Top 6 Methods To Repair Activation Error Code 0xc004c003 Product Key Blocked
Application Error code 0xC004C003 can be fixed with the help of fixes mentioned in this blog. Try all the methods to fix Application Error code 0xC004C003.
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