Microsoft Customer Support cannot assist with product keys purchased from third-party retailers.

If you purchased your license from us, please contact our support team for assistance.

Before you start, make sure you have:

✅ Your Windows 10 Enterprise product key

✅ A stable internet connection

✅ Administrator access to your computer

✅ A backup of your important files

✅ A PC that meets the Windows 10 system requirements

Microsoft's official Windows 10 download page can be used to create installation media or download the ISO.

Before installing or upgrading, check which Windows edition is currently installed.

Press:

Windows + R

Type:

winver

Click OK.

You will see your current Windows edition, for example:

If Windows is not already installed, or if you want to perform a clean installation, download Windows 10 directly from Microsoft:

Microsoft Windows 10 Official Download Page

https://www.microsoft.com/software-download/windows10

On the Microsoft page, you can choose one of these options:

You need a USB drive with at least 8 GB of storage.

⚠️ Important: All files on the USB drive will be deleted.

Insert the Windows 10 installation USB into the computer.

Restart the computer.

Boot from the USB drive.

You may need to press one of these keys during startup:

F2, F8, F9, F10, F11, F12, ESC, or DEL

The correct key depends on your computer manufacturer.

When Windows Setup opens:

When asked for a product key, enter your Windows 10 Enterprise product key.

If Windows does not accept the key during installation, click:

I don't have a product key

Then continue the installation and activate Windows later from Settings.

If Windows asks you to choose an edition, select:

Windows 10 Enterprise

⚠️ Make sure you select the correct edition. A Windows 10 Enterprise product key will not activate Windows 10 Home or Windows 10 Pro unless the edition is changed to Enterprise.

Read and accept the Microsoft Software License Terms, then click Next.

Select:

Custom: Install Windows only (advanced)

This option is recommended for a clean installation.

⚠️ A clean installation may remove existing files, apps, and settings. Make sure you have backed up your important files before continuing.

Choose the drive where you want to install Windows.

Usually, this is the main drive listed as:

Drive 0

Click Next.

Windows will now install. The computer may restart several times.

After installation, follow the on-screen setup steps:

After Windows is installed:

Microsoft confirms Windows can be activated from Settings > Update & Security > Activation, and that a valid product key can be used if no digital license is available.

To confirm that Windows is activated:

You should see:

Windows is activated

You can also check using Command Prompt:

A message should confirm that Windows is permanently activated.

If Windows 10 Pro is already installed, you may not need to reinstall Windows.

Microsoft's activation guidance includes changing the product key from Activation settings when upgrading or changing editions.

If the upgrade doesn't start with your key, you can enter the following upgrade key instead:

NPPR9-FWDCX-D2C8J-H872K-2YT43

This key only unlocks the Enterprise edition — it doesn't activate Windows. After the upgrade is complete, return to the same menu and enter the product key you received to activate Windows.

Please check the following:

✅ You entered the product key correctly

✅ Windows 10 Enterprise is installed

✅ The computer is connected to the internet

✅ The PC date and time are correct

✅ You are not trying to activate Windows 10 Home or Pro with an Enterprise key

If activation still fails, take a screenshot of the error message and contact our support team.

Please include:

Please note: Microsoft Customer Support cannot assist with licenses purchased from third-party retailers. If you purchased your Windows 10 Enterprise license from EM Digital Group, our support team will be happy to assist you.