The error 0xc004c003 is a Windows activation error, which arises with some description that is stated in the section below. 

“An error occurred, Windows 10 activation error 0xc004c003”. This error has been observed by a lot of people who installed the upgraded version of Windows OS or did a fresh installation. 

This situation can come up due to various factors. Mostly, this error can be triggered because of a faulty activation or an installation process. Even if there are some temporary or duplicate files present on the device, the issue can appear in most cases. 

Sometimes, it can also occur when there is a failure in the Microsoft server. Furthermore, the error might also appear if the product key isn’t genuine. 

If you are also struggling with the same glitch, then you can resolve this error by implementing the proper methods. Here, in this article, get the proper guidelines for resolving activation error 0xc004c003. Therefore, let’s delve into the core of the Windows activation problem.

Possible Reasons Behind Windows 10 Activation Error 0xc004c003

Before resolving the Windows activation error, you must be conscious of the various events that can lead you to this specific error.  

Basically, there are several reasons responsible for this issue. But, let’s highlight the most obvious ones to learn why this Windows 10 activation error bothers you. 

• Windows activation error 0xc004c003 can arise when you make some major hardware changes after beginning the Windows 10 installation process.
• Using the backdated version of Windows OS can also lead you to the Windows 10 activation error 0xc004c003.
• Also, if your Windows Operating System is completely infected with malware or viruses infection, then such an error can appear.
• Moreover, the error can also appear if Windows Servers are over-packed.

Apart from these major causes, some other events can also influence this error. No matter what caused this error, you must crack this error as soon as possible. 

So, let’s proceed with the troubleshooting methods and overcome this error by following the instructions.

Genuine Ways to Resolve Windows 10 Activation Error 0xc004c003

Here, in this section, you will get to learn various ways that are proven to resolve Windows activation error. So, it is recommended that you apply the methods accordingly to troubleshoot this issue.

Perform a Clean Boot

Running a clean boot is one of the best ways to resolve the Windows activation error. When you open Windows, some of the programs are running in the background as a startup application. But, at times, it can create various problems including the Windows 10 activation error 0xc004c003. 

In such situations, it is a wise choice to perform a clean booting process. This process will disable the unused startup applications as well as the non-Windows services.  

This process will also enhance the system’s performance by disabling the unimportant startup application. 

To perform a clean boot, go through the steps underneath.

Step 1:

Hold the combination of Windows logo +R key. Then, invoke the Run window. Now, type  “msconfig” into the Run dialog box and hit the Enter tab to execute the command.  

Step 2:

After executing the command, you will find the System Configuration window that pops up on the display screen. Under the System Configuration Window, go to the Service tab and find out the option named “All Microsoft Services”.

Step 3:

Now, choose the “Disable All” option from the queue window. After performing this task, hit the Apply button. Also, tap on the OK button from the appeared menu.

Step 4:

When the process is over, you can verify whether the error is removed or not. In case if the error still bothers you, then go to the Run window and write “msconfig”. Afterward, press the Enter key to execute the command.

Step 5:

Now, return to the System Configuration window and select the “Start-Up” option. Launch the Task Manager window and review the last field named Start-Up Impact. Here, you need to disable all the High Impact files.  

Finally, tap on the file, then hit the “Disable” option from the appeared menu. As soon as you perform this task, it will disable them from the beginning when you boot your system.

Now, reboot your device with a minimum amount of startup applications and services. Then, verify whether the error gets eliminated or not. 

Note- You can re-enable them in the future whenever you need. The only change in the steps is, instead of selecting the Disable button, you require to hit the Enable option from the menu.

Verify the Internet Connectivity

After performing the clean boot, if the error appears continuously, then there is a chance that you are using an unstable Internet connection. 

Therefore, before proceeding with the Windows activation process, make sure that you have connected your device with a strong WiFi or Ethernet connection. 

If you find any sort of connectivity problem, then resolve it by resetting the Internet connection. Moreover, you can also take further action by restarting your network to solve the connectivity issue. 

Use slmgr.vbs Key

Some users encounter the error 0xc004c003 while upgrading the Windows Operating System. In such circumstances, they find that the update process gets stuck at a certain point.

This is when Windows 10 activation error appears on your system. 

To overcome this error, you can use the slmgr.vbs key to enhancing the speed of the update process. 

Step 1: Tap on the Start menu. Then, write “Command Prompt” into the Search field. Now, you will find the Command Prompt option at the top of the search list. Now, right-click on it and choose the option named “Run as Administrator” from the appeared menu.  

Step 2: When the Command Prompt opens with the Administrator rights, write “slmgr.vbs-rearm” and hit the Enter key to run the command. 

Step 3: Next, wait for a few minutes and then reboot your device to apply the new changes.

Update the BIOS

If you are using an outdated version of BIOS, then you may find this error due to this reason. To resolve this matter, you need to install the upgraded version of BIOS. But, you have to be quite careful while updating the BIOS. 

If you made any sort of mistake, then it might erase your valuable data and files. To avoid this situation, backup your data and then proceed with the update process. 

• At first, go to the Start menu. Then, invoke the System Information window, Under this window, look for your device’s model and locate the BIOS version number.
• Once you get all the necessary information, visit the BIOS manufacturer’s support site and search for the updated version.
• Now, download the upgraded version according to the on-screen instructions.

Review the Product Key

After installing the newest version of BIOS, if the error still appears, then you are required to review the validity of the product key. Furthermore, attempt to use a different key to active the server. 

Also Read: Lenovo Laptop Screen Black

In case, if you are not able to locate the Product key, then you can take help from the Command Prompt. 

Step 1: At first, press the Windows tab and the X key altogether. Then, choose the Command Prompt from the appeared menu. Now, in the Command Prompt window, type “‘wmic path SoftwareLicensingService get OA3xOriginalProductKey” and hit the ‘OK’ button to run the command. 

Step 2: Now, inspect the Product key and press the combination of the Windows logo and I key. After that, navigate to Settings and hit the “Update and Security” option from the queue menu. 

Step 3: Under the “Update and Security” window, locate and choose the Activation folder and hit the option named “Change the product key”. Lastly, enter the Product key and hit the Next option to proceed with the execution.  

Sum It Up…

Using these methods, you will be able to eradicate the Windows 10 activation error 0xc004c003 without any hassle. But, if you face any sort of trouble while applying them, mention your issues in the comment section.

Furthermore, you can also consult a Windows technician for further help.