In that case it is necessary to perform a clean installation (see Option 1).ģ. If those two points apply to you, it is obvious that some important system files are missing. If error code "0x800f0805" appears after applying the default product key, please make sure that you have at least 20 GB of free disc space and that Windows is updated to it's latest version. If it's not accepted, apply the default product key: "VK7JG-NPHTM-C97JM-9MPGT-3V66T"
Press the "Windows key" + "R", type "slui.exe" and hit "Enter"Ģ. Please proceed with this when you are currently using Windows 10 Home and want to upgrade to Proġ.
Option 2: Upgrading from Windows 10 Home to Pro Remove all partitions and create a new one to install Windows.Installation type: Custom: Install Windows only (advanced).Select your language, time, and keyboard preferences.Boot from the USB flash drive or the DVD you have created.Select the media you want to create (USB flash drive or ISO file to create a DVD).Select Edition: Windows 10 (it includes both, Pro and Home).Create installation media for another PC.Download Windows Media Creation tool directly from Microsoft: Please proceed with this when you are currently using an older Windows version than Windows 10 or a PC without an operating systemġ. Option 1: Performing a clean installation However, the steps to retrieve product keys for older Windows versions may differ.Windows 10 Pro: How to download, install and activate In addition, to deinstall or reinstall another Windows version you might need a Windows 7 product key or Windows 8 product key. You have a volume licensing contract or MSDN subscription.You’ve got a digital version of the operating system from an authorized dealer.You’ve purchased the disc-based Windows 10 version.In the following situations it may be necessary to retrieve the Windows 10 product key: If you’ve purchased a digital license, you may be able to view the Windows 10 license and get a product key afterwards. You purchase an operating system via the Microsoft Store.You upgrade Windows 7 or 8 to Windows 10.You purchased a new PC with a Windows operating system.Even when you’re reinstalling Windows 10, the system detects the license automatically. The operating system can be activated via your Microsoft account. Digital licenses allow for the simple installation of an operating system without requiring a bootable device. With the launch of Windows 10, product keys have become less important because Microsoft launched digital licenses in 2016.
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