Windows 10 Mobile Release: Dates and the Technical Preview

This platform has been fully discontinued. Windows 10 Mobile reached end of support in December 2019, and Microsoft shut down the Windows Insider Program for mobile devices around the same time — the Insider app enrollment steps below can no longer be completed on any device, and no further updates or preview builds have been released since.

Historical Background

This guide originally covered installing the Windows 10 Mobile Technical Preview via the Windows Insider Program ahead of Windows 10 Mobile’s official release. That release did eventually ship, and the platform had a run of several years on Lumia and other Windows phones before Microsoft discontinued active development in 2017 and ended support entirely in December 2019.

If You’re Looking for a Modern Mobile OS

Windows phones are no longer manufactured or supported by Microsoft. If you’re managing a mobile device fleet today, current options are Android (managed via Intune or another MDM) or iOS/iPadOS, both of which have first-class support in Microsoft Intune for device management, conditional access, and app deployment.

If You Still Have a Windows Phone Running (Updated for 2026)

Any Windows 10 Mobile device still switched on today has been receiving zero security patches for over six years — there’s no ESU-style paid extension option for this platform the way there is for Windows 10 desktop, since Microsoft ended mobile support outright rather than winding it down in stages. A surviving device is really only safe to use offline or for genuinely legacy, non-networked purposes at this point; it shouldn’t be connected to any account or network you care about. If you’re holding onto one for nostalgia or as a collector’s piece, that’s a different matter, but treat it as a museum piece rather than a working phone.

Resources

• Microsoft