Complete Guide

WINDOWS 10/11 PROFESSIONAL

Follow these instructions to install and activate Windows 10/11 Professional.

Windows 11 Professional

Visit the official Microsoft download page

You may be prompted to enter the product key during installation

If Windows 11 is already installed: Start → Settings → System → Activation → Update product key → Change product key → Click Change

Enter the product key to activate Windows 11 Professional

Visit the official Microsoft download page

You may be prompted to enter the product key during installation

If Windows 10 is already installed: Start → Settings → Update & Security → Activation → Change product key

Enter the product key to activate Windows 10 Professional

Your Windows Professional is now activated!

Upgrading from Home Edition?

If you have Windows Home and need to upgrade to Pro, use this key first:

P6782-D2NFT-8WMXK-HC8CP-Q3WXG

After upgrading, change the key again and enter your purchased license key.

If you encounter activation errors, follow these steps.

Search "Services" on Search Bar → Click on Services
Find: Windows License Manager Service, Windows Update, Windows Event Log, Windows Event Collector, Windows Time
All must be in Running status with Automatic startup type
If not, right-click → Properties → Set to Automatic → Start → Apply

This is due to Windows 'N' edition or previous organization activation. You need to perform a fresh Windows reinstallation.

This method can also be used for OFFLINE activation of Windows:

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