If you uninstall the other app, Microsoft Defender Antivirus will turn back on automatically. If you have another antivirus app installed and turned on, Microsoft Defender Antivirus will turn off automatically. (In early versions of Windows 10, Windows Security is called Windows Defender Security Center). Windows Security is built-in to Windows and includes an antivirus program called Microsoft Defender Antivirus. For more info, see Windows 10 or 11 in S mode FAQ.

But don't worry-the built-in security of this mode automatically prevents viruses and other threats from running on your device, and you'll receive security updates automatically. Because this mode is streamlined for tighter security, the Virus & threat protection area has fewer options. For tips on locating your product key, check Find your Office 2010 product key or Enter the product key for your Office 2007 program.Some features will be a little different if you're running Windows 10 or 11 in S mode. If you have Office 2010 or earlier and choose to perform a clean install of Windows 10, you will need to locate your Office product key. For more information, check How to upgrade to Windows 10 on new devices that include Office 365. To redeem your copy of Office, please see Download and install Office 365 Home, Personal, or University on your PC.

If you just purchased a new device that includes Office 365, we recommend redeeming (installing) Office before upgrading to Windows 10. Please see the Volume Licensing Service Center for more information. Windows 10 Enterprise isn’t available here. To check what edition you're currently running, go to PC info in PC settings or System in Control Panel, and look for Windows edition. You should also choose the same edition of Windows. To see what language you're currently using, go to Time and language in PC settings or Region in Control Panel. You'll need to choose the same language when you install Windows 10. We also recommend that you visit your PC manufacturer's website for info about updated drivers and hardware compatibility. See the system requirements before installing Windows 10.

To check this on your PC, go to PC info in PC settings or System in Control Panel, and look for System type. You’ll create either the 64-bit or 32-bit version of Windows 10 that’s appropriate for your CPU.

When burning a DVD from an ISO file, if you are told the disc image file is too large you will need to use Dual Layer (DL) DVD Media.Ĭheck these things on the PC where you want to install Windows 10:.

We recommend using a blank USB or blank DVD, because any content on it will be deleted.

A blank USB flash drive with at least 5 GB of space or blank DVD (and DVD burner) if you want to create media.

Sufficient data storage available on a computer, USB or external drive for the download.

An internet connection (internet service provider fees may apply).

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