Having a genuine Windows 10 Pro license key unlocks the full potential of your operating system. But activating it can sometimes be tricky. Worry not, for this step-by-step guide will equip you with the knowledge to navigate the process smoothly.
If you have purchase license key from Keyslo.com, you will get the Keys delivered to your Email ID, immediately after payment. We send activation key within 10 second of successful payment.

Before you begin:
- Ensure you have a valid Windows 10 Pro license key. You can purchase one from Microsoft or authorized retailers like Keyslo.
- Make sure you’re connected to the internet.
Method 1: Activating During Installation
- Insert your installation media (USB) boot from a recovery partition.
- You can download Windows 10 ISO file and burn on USB Pen drive using Rufus.
- Proceed through the initial setup steps until you reach the “Enter product key” window.

- Carefully enter your 25-character license key and click “Next”.
- Follow the on-screen instructions to complete the installation.
Method 2: Activating After Installation
- Click the Start button and select Settings.

- Navigate to “Update & Security” and then “Activation”.
- Click “Change product key”.

- Enter your license key and click “Next”.
- Windows will attempt to connect to Microsoft servers to activate your copy.
Troubleshooting Tips:
- If you encounter an error message during activation, double-check your license key for typos or invalid characters.
- Ensure you’re using the correct license key for your specific Windows 10 Pro edition (Home, Pro, etc.).
- If you’re still having trouble, contact Keyslo support for assistance.
By following these simple steps, you can successfully activate your Windows 10 Pro with a license key and unlock its full potential. Remember, using a genuine license key ensures smooth operation, regular updates, and access to essential features.






14 Responses
Keys are not working,showing error message.
Getting following error while updating windows 10 pro key: error code 0x80070422
Help me to resolve the issue. Thanks.
WINDOWS 10 PRO KEY NOT WORKING PLEASE HELP
WINDOWS 10 PRO KEY NOT WORKING PLEASE HELP
WINDOWS 10 PRO KEY NOT WORKING PLEASE HELP
The key does not work, who can help fix this?
The product key you entered didnt work.
Thank you very much for your service and I am convinced with your strong credibility with the immediate response and service, I express my happiness to say that the key provided to me has been worked properly .
Product key you entered didn’t work
Oxc004f050
Plz solv the issue
product key not working
Windows key not working plz help
not working please help
Thank you soo Much. my pc working properly..
This key is not working
Key not working order 66252
0*80072ee7