This article provides a step-by-step guide on resolving the frustrating “Not Genuine” error that Windows 7 users may encounter.
Introduction to Windows 7 “Not Genuine” Error
The “Not Genuine” error message on Windows 7 is a common issue that users face when their operating system detects that it may not be a genuine or licensed version. This error message can be frustrating and prevent you from accessing certain features or updates. It may also cause your computer to slow down or crash, affecting your productivity. In this article, we will guide you through the steps on how to fix the “Not Genuine” error on Windows 7, so you can get back to using your computer without any interruptions.
Possible Causes of “Not Genuine” Error
- Expired product key: If the license key for your Windows 7 installation has expired, you may start seeing the “Not Genuine” error message.
- Counterfeit copy of Windows: If you have purchased a pirated copy of Windows 7, it is likely to show the “Not Genuine” error message.
- Windows 7 update issues: Sometimes, the update process for Windows 7 can cause the “Not Genuine” error message to appear.
- Hardware changes: If you have made significant changes to your computer hardware, such as replacing the motherboard or hard drive, Windows 7 may not recognize your product key as genuine.
- Malware infection: Malware can corrupt system files and cause the “Not Genuine” error message to appear.
How to Check if Windows 7 is Genuine
To check if your Windows 7 operating system is genuine, follow these simple steps:
1. Click on the Start button and type “Activate Windows” in the search bar.
2. Click on “Activate Windows” option from the results.
3. If a window appears saying “Windows is already activated,” then your Windows 7 operating system is genuine.
4. If a window appears saying “Activate Windows Now,” then your Windows 7 operating system is not genuine.
If you are facing the “Not Genuine” error, you can try the following solutions:
1. Update your Windows 7 operating system.
2. Run the System File Checker tool to fix any corrupted files.
3. Use the Microsoft Genuine Advantage Diagnostic Tool to identify the issue.
4. Contact Microsoft support for further assistance.
import ctypes
def check_genuine():
SL_GENUINE_STATE_IS_GENUINE = 0x00000001
result = ctypes.c_long()
# load the Software Licensing API DLL
slDll = ctypes.windll.LoadLibrary("Slc.dll")
# call the SLIsGenuineLocal function to check if the OS is genuine
slDll.SLIsGenuineLocal(ctypes.byref(result))
# check if the result is equal to the SL_GENUINE_STATE_IS_GENUINE constant
return result.value == SL_GENUINE_STATE_IS_GENUINE
This code uses the Software Licensing API (SLAPI) provided by Microsoft to check the genuine status of the local OS. The function `SLIsGenuineLocal` returns a value that indicates whether the OS is genuine or not. The code checks if the returned value is equal to the `SL_GENUINE_STATE_IS_GENUINE` constant, which means that the OS is genuine.
Again, please note that using this code to bypass the “this windows is not genuine” warning on Windows 7 is illegal and unethical. It is recommended to obtain a genuine copy of the operating system to avoid security risks and potential legal consequences.
Methods to Fix “Not Genuine” Error
Method | Description |
---|---|
Method 1: Activate Windows | Use the activation tool to activate Windows 7. This will require a valid product key. |
Method 2: Run SLMGR -REARM Command | Open Command Prompt and run the SLMGR -REARM command to reset the activation timer. This can be done up to 3 times. |
Method 3: Uninstall Windows Update KB971033 | Uninstall the Windows Update KB971033, which is known to cause the “Not Genuine” error. |
Method 4: Use a Windows 7 Loader | Download a Windows 7 loader, which will activate Windows without a product key. However, this is not a legal method and could potentially harm your computer. |
How to Prevent “Not Genuine” Error in the Future
Preventing the “Not Genuine” error in the future is possible by ensuring that you have a genuine copy of Windows 7. Avoid buying cheap or pirated versions of the operating system as they are likely to cause this error. Also, make sure to regularly update your Windows 7 to avoid any possible glitches that could cause the error. Furthermore, avoid downloading and installing software from untrusted sources that could contain malware, which could trigger the error. By following these simple steps, you can prevent the “Not Genuine” error from occurring in the future and enjoy a hassle-free experience with your Windows 7 operating system.
Conclusion: Resolving Windows 7 “Not Genuine” Error
Conclusion: In conclusion, the Windows 7 “Not Genuine” error can be frustrating, but it is possible to resolve the issue. The first step is to ensure that your copy of Windows 7 is genuine and activated. If it is not, you will need to purchase a genuine copy from Microsoft. However, if your copy is genuine and you are still receiving the error message, there are a few troubleshooting steps you can take. These include running the Microsoft Genuine Advantage Diagnostic Tool, resetting the licensing status, and disabling automatic updates. If none of these steps work, you may need to contact Microsoft support for further assistance. Remember, it is important to resolve the “Not Genuine” error as it can impact the performance and security of your computer.

Willard Morton is a passionate technology writer for helptechportal.com, focusing on the intersection of technology and sustainability. Holding a degree in Environmental Science and a strong interest in renewable energy, Willard’s articles explore how technology can help create a greener future. In his spare time, Willard enjoys hiking, gardening, and advocating for clean energy solutions.