How can I verify if my Windows is activated?

Go to Settings > Update & Security > Activation. Your activation status will be displayed there.

Can I use the same product key on multiple devices?

Usually, a Windows product key is valid for only one device unless you have a volume license or multiple licenses.

Easily Change Windows Product Key to Activate Windows

☰

How to Change Your Windows Product Key (Windows 10 & 11): Need to update your Windows license key? Whether you're activating a clean installation or switching to a different edition, there are two quick and effective ways to change your product key: through Windows settings or using the Command Prompt.

In this step-by-step guide, you’ll learn how to change your Windows product key using both methods, troubleshoot common activation errors, and verify your activation status.

Method 1: Change Windows Product Key via Settings (GUI)

This is the easiest method and works well for most users on both Windows 10 and Windows 11:

Press Windows + I to open the Settings app.
Type "Activation" into the search bar.
Select "Activation settings" from the results.
Click "Change" under the Change product key section.
Enter your new 25-character product key, then click Next.
Follow the on-screen prompts to complete the activation process.

Note: Be sure the product key matches your installed edition of Windows (e.g., Home, Pro, Enterprise).

Method 2: Change Windows Product Key via Command Prompt

If you prefer using command-line tools or need a more advanced method:

Press Windows + R, type cmd, and hit Enter.
To uninstall the current key:
```
slmgr /upk
```
To install your new key:
```
slmgr /ipk your-new-product-key
```
To activate Windows:
```
slmgr /ato
```

Once completed, a pop-up message should confirm successful activation.

Troubleshooting Windows Activation Issues

If activation fails, try the following steps:

Check your internet connection: Activation requires online access.
Verify the product key: Make sure it's valid and matches your edition.
Use the Activation Troubleshooter: Go to Settings > Activation and select Troubleshoot.
Contact Microsoft Support: If the issue persists, reach out to official support.

Frequently Asked Questions

Can I change my Windows product key without reinstalling Windows?

Yes. You can change the key anytime using the Activation settings or Command Prompt without reinstalling your system.

What happens if I enter an invalid product key?

Activation will fail, and you’ll receive an error message. Be sure to use a key that’s valid for your installed version of Windows.

Do I need an internet connection to activate Windows?

Yes, an active internet connection is required for online activation to complete successfully.

How can I check if my copy of Windows is activated?

Go to Settings > Update & Security > Activation. The activation status will be shown at the top.

Can I use one Windows product key on multiple devices?

Generally, no. A standard retail or OEM key is valid for one device. Volume or enterprise licenses are exceptions and support multiple activations.