Cortana

Personal assistants · 2014 – 2024 · Microsoft

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Microsoft's voice assistant for questions, reminders, search, calendar tasks and email across Windows and Microsoft 365.

Microsoft retired Cortana across Windows and Microsoft 365, with its remaining Outlook mobile voice features ending in June 2024.

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Shutdown: Microsoft first published the end-of-support notice on June 2, 2023. Cortana's Windows and Microsoft 365 experiences then retired during 2023, followed by Outlook mobile voice search and Play My Emails in June 2024. This record uses that final retirement month because Microsoft did not publish an exact day. It covers the Cortana assistant service, not Microsoft Copilot, Windows voice access or other text-to-speech features. Official shutdown notice
Dates checked: Announced 2 Jun 2023 · Verified 23 Sep 2026
AI functionality: AI functionality source
Launch: Cortana became available as a U.S. beta with the Windows Phone 8.1 Preview for Developers on April 14, 2014. The April 2 unveiling was an announcement; broader consumer availability followed later.
Location: United States · Redmond. Microsoft's 2024 annual report records its corporate mailing address in Redmond, Washington. This records the operator's historical city, not a service market or server location. Coordinates use the U.S. Census Bureau's 2024 Redmond city centroid rounded to two decimal places, not the office address. Location source