Windows License Activation Guide

# Windows License Activation Guide

Understanding Windows License Types

Before activating your Windows operating system, it’s important to understand the different types of licenses available:

• Retail License: Purchased directly from Microsoft or authorized retailers
• OEM License: Pre-installed on new computers by manufacturers
• Volume License: For businesses managing multiple installations

How to Activate Your Windows License

Method 1: Online Activation

This is the simplest and most common method:

1. Open Settings > Update & Security > Activation
2. Click “Change product key” if you have a new license
3. Enter your 25-character product key
4. Follow the on-screen instructions to complete activation

Method 2: Phone Activation

Use this method if you don’t have internet access:

1. Open Command Prompt as administrator
2. Type slui 4 and press Enter
3. Select your country and call the displayed number
4. Follow the automated instructions to receive confirmation ID

Troubleshooting Common Activation Issues

If you encounter problems during activation, try these solutions:

• Error 0xC004C003: Usually means the product key is already in use
• Error 0x8007007B: Indicates an invalid product key format
• Error 0xC004F074: Often occurs when Microsoft servers are unavailable

Managing Your Windows License

To check your current license status:

1. Open Command Prompt
2. Type slmgr /xpr and press Enter
3. The system will display your activation status and expiration date

Remember that genuine Windows licenses ensure access to all features and security updates. Always purchase from authorized sellers to avoid counterfeit products.