Upgrading from Windows 10 Home to Windows 10 Pro is quick, and you won’t lose any of your files, apps or settings. All you need is a genuine Windows 10 Pro product key — enter it and Windows handles the rest. Below is a full step-by-step guide covering both the Settings method and the Command Prompt (CMD) method, plus fixes for the most common upgrade errors.
What you need before you upgrade
You only need one thing: a genuine Windows 10 Pro product key. The upgrade keeps all your personal files and installed programs in place — there is no need to reinstall Windows. Your key is delivered instantly on your order confirmation page, so you can start right away.
Method 1 — Upgrade from Settings (easiest)
- Open Start → Settings → Update & Security → Activation.
- Click Change product key.
- Enter your Windows 10 Pro product key and click Next.
- Windows verifies the key and upgrades from Home to Pro. When it finishes, restart your computer — you are now on Windows 10 Pro, activated.
Method 2 — Upgrade using Command Prompt (CMD)
If the Settings method does not change your edition, you can apply the key manually:
- Open Command Prompt as administrator.
- Type the following command and press Enter:
slmgr.vbs /ipk KEY - Replace KEY with the Windows 10 Pro product key you received from us.
- Restart your computer. It will upgrade to Windows 10 Pro and activate automatically.
Common upgrade errors and how to fix them
Error 0xC004F050
This can appear during the upgrade. There’s nothing to worry about — simply restart your computer and Windows will upgrade itself to the Pro version, after which you can complete activation.
Error 0xC004F069 (non-core edition)
If you see “Error: 0xC004F069 on a computer running Microsoft Windows non-core edition… run slui.exe 0x2a 0xC004F069 to display the error text”, you probably have a non-core Windows 10 Home edition, which can’t be upgraded to Pro directly. In that case you’ll need to install Windows 10 Pro with a clean installation. Follow our clean installation guide for step-by-step instructions. If you’d rather not do a clean install, contact us and we can try to help by upgrading your Home edition to Enterprise instead of Pro.
Will I lose my files when upgrading to Pro?
No. Upgrading from Windows 10 Home to Pro with a product key is an in-place edition change — your documents, photos, installed apps and settings all stay exactly as they are. You don’t need to back up or reinstall anything (the only exception is the rare non-core edition case above).
Windows 10 Home vs Pro — why upgrade?
Windows 10 Pro adds business and power-user features that Home doesn’t include, such as:
- BitLocker drive encryption to protect your data
- Remote Desktop (host) to connect to your PC from anywhere
- Hyper-V virtualization
- Group Policy management and domain join for business networks
- Support for more RAM and assigned access
Get your genuine Windows 10 Pro key
Ready to upgrade? Buy a genuine Windows 10 Pro product key and you’re set — it’s delivered instantly on your order confirmation page, with step-by-step activation guides and live support included.
Buy Windows 10 Pro Key →Frequently asked questions
How long does the upgrade take?
Usually just a few minutes. After you enter the key, Windows applies the upgrade and a single restart completes the process.
Do I need to reinstall Windows?
No, entering a Pro key upgrades your existing installation in place. A reinstall is only needed for the rare non-core edition case.
Is the Windows 10 Pro key genuine?
Yes. Every key we sell is genuine and delivered instantly on your order confirmation page, with step-by-step activation support included.