Microsoft reminded its customers that Windows 10, version 21H1, will reach its end of support (EOS) on December 13, 2022 .
See also: Windows 10 21H1: End of support from December
This reminder follows another warning issued last month that this version of Windows is approaching its retirement date of December 13, 2022.
Microsoft said in an update on the Windows health that systems running Windows 10 21H1 (also known as the May 2021 Update) will no longer receive security updates.
Support for Windows 8.1 will also end on January 10, 2023, and security updates will no longer be provided. Additionally, Windows 8.1 will not provide Extended Security Update (ESU) support.
Customers using them should upgrade to the latest version as soon as possible to avoid exposing their systems to attacks that exploit unpatched vulnerabilities .
"The December 2022 security update, released on December 13, is the last available update for these versions. After this date, devices running these versions will no longer receive monthly security and quality updates that contain protections against the latest security threats," Microsoft explained.
"Customers who contact Microsoft Support after this date will be prompted to update device to the latest version of Windows 10 or Windows 11 to continue being supported," the company says in a separate support document.
See also: Windows 11 KB5018427: Arrived with 30 bug fixes
The full list of Windows 10 21H1 versions that will reach end of support includes:
Windows 10 Enterprise, version 21H1
Windows 10 Enterprise multi-session, version 21H1
Windows 10 Education, version 21H1
Windows 10 IoT Enterprise, version 21H1
Windows 10 Home, version 21H1
Windows 10 Pro, version 21H1
Windows 10 Pro Education, version 21H1
Windows 10 Pro for Workstations, version 21H1
Also, Microsoft will likely soon start pushing updates via Windows Updateto consumer and unmanaged business devices running Windows 10 21H1 as it approaches EOS to ensure they continue to receive critical security updates.
See also: Windows: All versions block brute-force admin attacks
You can check if your device is eligible and can be upgraded to the latest version of Windows 11 by using the PC Health Check app or by comparing your system specifications to the Windows 11.
You can follow this guided walkthrough or use this support document to fix any errors while upgrading to the latest version of Windows.
