Windows 10 Pro includes additional business and security features that are not available in Windows 10 Home, including BitLocker management, Remote Desktop hosting, domain joining, Group Policy, and Assigned Access.
You can normally upgrade an activated Windows 10 Home installation to Windows 10 Pro without formatting the computer or reinstalling your applications. The upgrade changes the installed edition while preserving personal files, settings, and compatible software.
Important: Microsoft ended regular support for Windows 10 on October 14, 2025. Upgrading from Home to Pro does not extend the Windows 10 support lifecycle. Use this process only when Windows 10 is still required, and consider Windows 11 Pro for compatible computers.
Windows 10 Home vs Pro
Windows 10 Home includes the essential features required by most personal computers. Windows 10 Pro adds tools intended for professional, business, and advanced administrative use.
| Feature | Windows 10 Home | Windows 10 Pro |
|---|---|---|
| BitLocker management | Not normally included. | Included on supported hardware. |
| Remote Desktop host | Can connect to another PC but cannot normally act as the host. | Can act as a Remote Desktop host. |
| Domain joining | Not included. | Included for compatible business networks. |
| Local Group Policy | Not normally included. | Includes the Local Group Policy Editor. |
| Assigned Access | Limited or unavailable. | Available for supported kiosk scenarios. |
Before You Upgrade
Check the Current Edition
- Open the Start menu.
- Select Settings.
- Select System.
- Select About.
- Check the edition under Windows specifications.
The computer should currently report Windows 10 Home. If it already reports Windows 10 Pro, you do not need to perform the edition upgrade.
You can also press Windows + R, enter winver, and select OK.
Check Windows Activation
- Open Settings.
- Select Update & Security.
- Select Activation.
- Confirm that Windows 10 Home is activated.
Microsoft recommends starting with an activated Home installation before upgrading to Pro.
Back Up Important Files
The edition upgrade should preserve personal files and applications, but you should still prepare for an unexpected error.
- Back up important documents, photos, and work files.
- Create a restore point.
- Connect laptops to a power source.
- Install pending Windows updates.
- Save the genuine Windows 10 Pro key securely.
- Close running applications before beginning.
Upgrade with a Genuine Windows 10 Pro Key
The recommended method is to enter your genuine Windows 10 Pro key directly through the Activation settings.
Open Activation Settings
- Press Windows + I.
- Select Update & Security.
- Select Activation.
- Find Upgrade your edition of Windows.
- Select Change product key.
Enter the Windows 10 Pro Key
- Enter your genuine 25-character Windows 10 Pro key.
- Select Next.
- Allow Windows to verify the key.
- Select Start or Activate when prompted.
- Allow the computer to restart.
A Windows product key follows this format:
XXXXX-XXXXX-XXXXX-XXXXX-XXXXXIf Windows accepts the key, it should install the additional Windows 10 Pro components and restart the computer.
Upgrade with the Generic Pro Edition Key
If a genuine OEM or retail Pro key cannot initiate the edition change while Windows 10 Home is installed, the public generic key may be used to switch the installed edition to Pro.
What the Generic Key Does
Microsoft’s generic Windows 10 Pro edition-change key is:
VK7JG-NPHTM-C97JM-9MPGT-3V66TThis is not an activation key. It does not provide a license and cannot permanently activate Windows. It only instructs Windows Setup to switch the installed feature set from Home to Pro.
| Key Type | Changes the Edition | Activates Windows |
|---|---|---|
| Generic Pro key | Can switch a supported Home installation to Pro. | No. It does not include a license. |
| Genuine Pro key | Can initiate the upgrade when accepted. | Yes, when the key is valid and its license conditions are met. |
Switch Windows to the Pro Edition
- Open Settings > Update & Security > Activation.
- Select Change product key.
- Enter
VK7JG-NPHTM-C97JM-9MPGT-3V66T. - Select Next.
- Start the edition upgrade.
- Allow the computer to restart.
If Windows attempts to validate or activate the generic key instead of beginning the edition change, temporarily disconnecting the internet may allow the edition installation to proceed.
Disconnect Wi-Fi
Select the network icon in the notification area and temporarily turn Wi-Fi off. Reconnect it after Windows has switched to Pro.
Disconnect Ethernet
Unplug the Ethernet cable or temporarily disable the Ethernet adapter. Re-enable it before activating the genuine product key.
After the restart, check that the edition is Windows 10 Pro. Windows may report that it is not activated until you install your genuine Pro key.
Install and Activate the Pro Key with SLMGR
slmgr.vbs is a built-in Windows licensing tool. It can install a genuine product key, request activation, and display the current license status.
Open Command Prompt as Administrator
- Open the Start menu.
- Search for Command Prompt.
- Right-click Command Prompt.
- Select Run as administrator.
- Select Yes when User Account Control appears.
You can also press Windows + R, enter cmd, and press Ctrl + Shift + Enter.
Install the Genuine Product Key
Reconnect the computer to the internet, then run:
slmgr.vbs /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXXReplace the placeholder with your genuine Windows 10 Pro product key.
The /ipk parameter installs the supplied key. It does not guarantee that online activation has completed.
Activate Windows
After installing the key, request online activation:
slmgr.vbs /atoWait for the Windows Script Host dialog. It should report whether activation succeeded or display an error code.
If an error appears, record the complete code before closing the dialog.
Verify the Edition and Activation
Verify Through Windows Settings
- Open Settings.
- Select Update & Security.
- Select Activation.
- Confirm that the edition is Windows 10 Pro.
- Confirm that Windows reports it is activated.
Verify with Winver
- Press Windows + R.
- Enter
winver. - Select OK.
The window should identify the installed edition as Windows 10 Pro.
Verify with SLMGR
Run the following command to check whether Windows is permanently activated:
slmgr.vbs /xprYou can display more detailed licensing information with:
slmgr.vbs /dlvCheck both the edition and activation status. An edition change can succeed even when activation has not been completed.
Fix Common Upgrade and Activation Errors
| Problem | What to Check | Recommended Action |
|---|---|---|
| Product key does not work | Confirm that the key is for Windows 10 Pro. | Check every character and contact the seller if the key is invalid or blocked. |
| Edition changed but Windows is not activated | Check whether the generic key is still installed. | Install the genuine key with slmgr.vbs /ipk, then run slmgr.vbs /ato. |
| Activation server error | Check the internet connection, date, time, and time zone. | Correct the connection or time settings and retry activation. |
| Key already used | Check whether the key is active on another computer. | Review the license terms or contact the product-key supplier. |
| Wrong Windows edition | Confirm that Windows reports Pro and not Home, Enterprise, or Education. | Use a key that matches the installed edition. |
Run the Activation Troubleshooter
- Open Settings.
- Select Update & Security.
- Select Activation.
- Select Troubleshoot, if available.
- Follow the displayed instructions.
If the computer recently received a major hardware change and the license was linked to a Microsoft account, select the applicable hardware-change option when offered.
Useful SLMGR Commands
| Command | Purpose |
|---|---|
slmgr.vbs /ipk PRODUCT-KEY |
Installs a new Windows product key. |
slmgr.vbs /ato |
Requests online Windows activation. |
slmgr.vbs /xpr |
Displays whether the current activation is permanent or has an expiration date. |
slmgr.vbs /dli |
Displays basic license information. |
slmgr.vbs /dlv |
Displays detailed license and activation information. |
Do not publish your genuine product key in screenshots, support messages, or command output.
Frequently Asked Questions
Will upgrading from Windows 10 Home to Pro delete my files?
The normal edition upgrade is designed to preserve personal files, settings, and compatible applications. You should still create a backup before starting.
Does the generic Windows 10 Pro key activate Windows?
No. The generic key only selects and installs the Pro edition. You must install and activate a genuine Windows 10 Pro key afterward.
Do I need to disconnect the internet during the upgrade?
Not when Windows accepts your genuine Pro key directly. A temporary disconnection may only be needed when using the generic edition-change key and Windows attempts to validate it as an activation key.
What is the difference between SLMGR /ipk and /ato?
The /ipk command installs a product key. The /ato command requests activation using the currently installed key.
Can a Windows 10 Home key activate Windows 10 Pro?
No. A Windows 10 Pro installation requires a Pro product key or an eligible Pro digital license.
Do I need to reinstall Windows to upgrade to Pro?
No. A supported Home-to-Pro edition upgrade can normally be completed from the Activation settings without formatting the computer.
Can I transfer an OEM Windows 10 Pro key to another computer?
OEM licenses are generally tied to the first computer on which they are activated, particularly its motherboard. Transfer rights depend on the applicable license terms.
Does upgrading to Pro extend Windows 10 support?
No. Windows 10 Home and Pro reached the end of regular support on October 14, 2025. Changing editions does not extend the operating system’s support lifecycle.
Conclusion
The simplest way to upgrade Windows 10 Home to Pro is to enter a genuine Pro key through the Activation settings. If the genuine key cannot initiate the edition change, Microsoft’s public generic Pro key can switch the installed feature set before you install the licensed key.
After the computer restarts, use slmgr.vbs /ipk to install the genuine Pro key and slmgr.vbs /ato to request activation. Verify the result through both Windows Settings and slmgr.vbs /xpr.
Because Windows 10 reached the end of regular support on October 14, 2025, Windows 11 Pro is the preferred long-term option for compatible computers.
Need a Windows Pro license? View Windows 10 Pro or move to a supported system with Windows 11 Pro.