The company said in a blog post that anyone who was using IE 10 should transition over to version 11 by the cutoff date.
"You will have until January 2020 to complete the transition from Internet Explorer 10 (IE10) to IE11," Microsoft's Suchitra Gopinath wrote on the Windows IT Pro blog.
"After this, we will not release any security or non-security updates, free or paid assisted support options, or online technical content changes for IE10."
"Upgrading to the latest version of Internet Explorer will ease the migration path to Windows 10, Windows Server 2016 or 2019, or Windows 10 IoT, and unlock the next generation of technology and productivity," she wrote.
"It will also allow you to reduce the number of Internet Explorer versions you support in your environment."
Microsoft is apparently not trying to push users to its new browser, Edge, right away as the engine is being rewritten to run on the Google open source Chromium engine.
IE11 is expected to be ready sfor testing on business systems by the second quarter of the year.
Earlier this month, Microsoft said it would end support and updates for Windows 7 on 14 January next year,