Excludes special, premium and non-geographic numbers. Calling to select countries and regions only. Skype is available only in select countries and regions.Secure boot requires firmware that supports UEFI v2.3.1 Errata B and has the Microsoft Windows Certification Authority in the UEFI signature database.For the most up-to-date list of regions, please go to the Movies & TV information page. Movies & TV application is not available in all regions.Miracast requires a display adapter which supports Windows Display Driver Model (WDDM) 1.3, and a Wi-Fi adapter that supports Wi-Fi Direct.Microsoft account is required for some features.Cortana is only currently available on Windows 10 for the United States, United Kingdom, China, France, Italy, Germany, Brazil, Mexico, Japan, Canada, Spain, Australia and India.Client Hyper-V requires a 64-bit system with second level address translation (SLAT) capabilities and additional 2 GB of RAM (available in Windows 10 Pro and Windows 10 Enterprise only).BitLocker To Go requires a USB flash drive (available in Windows 10 Pro and Windows 10 Enterprise only).Check with your PC manufacturer to confirm if your device supports the correct TPM version and InstantGo for the scenario you want to enable. TPM 2.0 and InstantGo support is required when you want to automatically encrypt the local drive when joining a device to Azure Active Directory (AAD).

BitLocker can be used on devices without TPM, but you will need to save a startup key on a removable device such as a USB flash drive.

BitLocker Drive Encryption (available with Windows 10 Pro or Windows 10 Enterprise only) requires a Trusted Platform Module (TPM) 1.2 or higher and Trusted Computing Group (TCG)-compliant BIOS or UEFI.

Below are some additional details regarding requirements for key features:

For specific hardware support please refer to your Original Equipment Manufacturer (OEM). In some cases, features included with updated versions of Windows 10 will be best experienced with newer processors. In addition to the requirements above that are needed to run Windows, some features have additional requirements.

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