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Windows OS — Microsoft operating system for PC
Windows is Microsoft’s operating system for desktops and laptops, designed to run everyday apps, professional software, and PC games. It manages hardware, user accounts, security features, updates, and system settings.
- Operating system for Windows-compatible PCs and laptops.
- Supports a wide range of software: productivity, creative tools, and gaming.
- Includes built-in security, updates, and device management features.
Windows editions and use cases
Windows is available in different editions that target different needs. The most common differences are business features, device management options, and security capabilities.
- Home: for personal use, everyday apps, and gaming.
- Pro: adds features for business use, remote work, and advanced security (edition-dependent).
- Other editions may exist for education or enterprise environments (availability depends on product).
OEM vs Retail — what’s the difference?
Windows licenses are commonly sold as OEM or Retail. The key difference is how the license is intended to be used and whether it can be transferred to another PC later.
- OEM: intended for installation on a single device; typically tied to the first PC it’s activated on and not meant to be transferred to a new device.
- Retail: intended for end users; generally transferable to another PC, as long as it’s removed/deactivated from the previous one and used on one device at a time.
- Support: OEM support is usually handled by the device builder/seller, while Retail support is typically provided by Microsoft (terms can vary by region/product).
- Best fit: OEM is common for one-PC installs; Retail is better if you expect to upgrade or replace hardware and want flexibility.
Compatibility basics
Before choosing a Windows product, check your PC requirements and make sure you’re buying the right version, edition, and license type.
- Confirm your PC meets the system requirements for the Windows version you want.
- Match the edition (Home/Pro) and license type (OEM/Retail) to your needs before installation.
