Fix: “Windows is not activated”

Do you get the message “Windows is not activated”? This is a common problem after reinstallation, hardware replacement, or if the product key has not been entered correctly. Fortunately, it can usually be fixed in a few minutes. Here is a simple step-by-step guide.

Why do you get this message?

• The product key has not been entered
• The wrong version of Windows is installed
• You have replaced the motherboard or PC
• No internet connection during activation
• The license is being used on multiple machines

Windows must contact Microsoft's activation servers to verify the license. If this fails, the message is displayed. :contentReference[oaicite:0]{index=0}

Fix 1: Run activation troubleshooter

1. Open Settings
2. Go to System → Activation
3. Click Troubleshoot

Windows can automatically find and activate the license if it is linked to your Microsoft account. :contentReference[oaicite:1]{index=1}

Fix 2: Sign in with the correct Microsoft account

If you have a digital license, you must be signed in with the account the license is linked to.

Fix 3: Re-enter the product key

1. Go to System → Activation
2. Click Change product key
3. Paste the key

The wrong key or version (Home vs Pro) will stop the activation. :contentReference[oaicite:2]{index=2}

Fix 4: Check internet and date/time

Windows must be online to be activated. Incorrect date or time can also block activation.

Fix 5: After hardware replacement

1. Run troubleshooter
2. Select I have changed hardware on this device
3. Select the PC from the list

This reactivates the license if it is linked to your account. :contentReference[oaicite:3]{index=3}

Fix 6: Check that the license is valid

If the same key is used on multiple PCs, activation will fail. Each machine needs its own license. :contentReference[oaicite:4]{index=4}

Do you not have a license?

The fastest solution is to activate with a new product key. It takes less than a minute.

Conclusion

The message “Windows is not activated” is usually due to the wrong key, a hardware change, or a missing digital license. With troubleshooting or the correct product key, you can activate Windows in a few minutes and remove the watermark permanently.