General Windows Phone 8.1
As of July 11, 2017, Windows Phone 8.1 users are no longer eligible to receive new security updates, non-security hotfixes, free assisted support options, or online technical content updates from Microsoft for free. Third parties or paid support programs may provide ongoing support, but it is important to recognize that Microsoft support will not publicly provide updates or patches for Windows Phone 8.1.
Windows Phone 8.1 was a great software release, but technology has evolved along with the needs and expectations of your customers and partners that have already adopted modern platforms and devices. An older mobile operating system can no longer address today’s business and technology needs nor security threats. Companies still on Windows Phone 8.1 are also missing out on tangible benefits of modernizing their IT investments and enhancing their security to meet the needs of a mobile workforce through future-proofing their IT investments.