Microsoft’s recent cessation of mainstream support for Windows 10 has stirred a wave of reactions across the globe, particularly as users are encouraged to transition to Windows 11. In Japan, this shift has sparked an almost instantaneous technological transformation, while in other regions, it has led to a fair amount of confusion among users.
Support Status and User Confusion
Notably, certain versions of Windows 10, such as the Enterprise LTSC and those enrolled in the Extended Security Updates (ESU) program, are still slated to receive security updates until at least 2027. However, many users have begun encountering unexpected end-of-support notifications within their Settings, leading to a sense of alarm.
<blockquote class="reddit-card" id="1o77q40/windows10ltsc2021endoflifewhatthe_hell”>Windows 10 LTSC 2021 End of life? What the hell, Microsoft? from r/sysadmin
Reports have emerged from various users who, despite qualifying for extended security updates, are being met with premature end-of-life warnings. This issue is particularly perplexing for those utilizing Windows 10 Enterprise LTSC 2021 and IoT Enterprise, both of which are designed for business use and are supported until 2032. The confusion appears to have stemmed from the deployment of the KB5066791 updates on October 14, 2025, which inadvertently triggered these erroneous messages.
Microsoft has acknowledged this error, clarifying that the notification stating, “Your version of Windows has reached the end of support,” is a mistake. The company has since rolled out a cloud configuration fix intended to eliminate the misleading message. However, users must be connected to the internet and restart their systems for the fix to take effect.
For those already enrolled in the ESU program or utilizing Windows 10 versions that still have several years of support remaining, the appearance of an end-of-support message has been not only puzzling but also somewhat alarming, as it seemed to contradict Microsoft’s earlier commitments. Nonetheless, Microsoft has reassured users that both Windows 10 Enterprise LTSC 2021 and Windows 10 IoT Enterprise LTSC 2021 remain supported and will continue to receive security updates in accordance with their established lifecycles.