To determine if your Windows copy is genuine, follow these official methods:
1. **Check Activation Status in Settings:**
- **Windows 10/11:** Go to **Settings > Update & Security > Activation**. A message stating "Windows is activated with a digital license" or "Windows is activated with a product key" typically indicates genuineness.
- **Watermark Alert:** If you see an "Activate Windows" watermark on the desktop, it’s not activated.
2. **Use Command Prompt (Admin):**
- Open Command Prompt as Administrator.
- Run `slmgr /xpr` to see if the license is expired.
- Run `slmgr /dli` for detailed license info. Look for "Licensed" status and channel (Retail, Volume, OEM).
3. **Microsoft Genuine Diagnostic Tool:**
- Download the **Microsoft Genuine Diagnostic Tool** from the official Microsoft site. It checks authenticity directly.
4. **System Information (msinfo32):**
- Press **Win + R**, type `msinfo32`, and check under **System Summary** for BIOS version and OS details matching official specs.
5. **Verify Product Key:**
- Retrieve your key via Command Prompt:
`wmic path softwarelicensingservice get OA3xOriginalProductKey`
- Contact Microsoft Support to verify the key’s validity if unsure.
6. **Check Windows Update:**
- Genuine copies receive updates without issues. Activation errors during updates may indicate a problem.
7. **Purchase Source:**
- Ensure your copy was purchased from an authorized retailer or Microsoft directly. OEM licenses from device manufacturers are valid.
**Red Flags:**
- Extremely low prices or third-party sellers without authorization.
- Persistent activation errors despite valid methods.
**Note:** Avoid third-party tools for verification due to security risks. Stick to Microsoft’s official methods for safety. If doubts persist, contact Microsoft Support for confirmation.