
# Windows License Activation Guide
Keyword: Windows License
## Understanding Windows License Types
Before activating your Windows operating system, it’s important to understand the different types of licenses available:
1. Retail License: Purchased individually and can be transferred to another computer
2. OEM License: Comes pre-installed with new computers and is tied to that specific hardware
3. Volume License: For businesses and organizations needing multiple installations
## How to Activate Your Windows License
### Method 1: Online Activation
This is the simplest and most common method for activating Windows:
- Connect your computer to the internet
- Go to Settings > Update & Security > Activation
- Click “Activate Windows”
- Follow the on-screen instructions
### Method 2: Phone Activation
If you don’t have internet access, you can activate Windows by phone:
- Open Command Prompt as Administrator
- Type
slui 4
and press Enter - Select your country from the list
- Call the displayed number and follow the automated instructions
## Troubleshooting Activation Issues
Common Problems and Solutions
Error 0xC004F074: This usually means the activation servers can’t be reached. Check your internet connection or try again later.
Error 0x8007007B: Typically indicates an invalid product key. Verify you’ve entered the correct 25-character code.
Error 0xC004C008: The product key is already in use. If you’ve recently changed hardware, you may need to contact Microsoft support.
## Maintaining Your Windows License
To ensure your Windows license remains valid:
- Keep your product key in a safe place
- Create a Microsoft account to link your digital license
- Regularly update your Windows installation
- Be cautious when making significant hardware changes
## Frequently Asked Questions
Can I transfer my Windows license to another computer?
Retail licenses can typically be transferred, while OEM licenses are tied to the original hardware. Volume licenses have specific transfer rules.
What happens if I don’t activate Windows?
Unactivated Windows will show a watermark, limit personalization options, and eventually restrict some functionality.
How do I check my activation status?
Go to Settings > Update & Security > Activation to view your current activation status.