- Out-of-Stock
Windows 10 ESU Year 1 — extended security updates for the 2025–2026 period following the end of Windows 10 support.
Extended Security Updates for Windows 10 after the end of official support. Critical security patches for 12 months — from October 2025 to October 2026.
| License | Windows 10 Extended Security Updates — Year 1 |
| Type | Extended Security Updates (ESU) |
| Validity period | October 2025 — October 2026 (12 months) |
| System | Windows 10 (version 22H2 or later) |
| Requirements | All updates installed up to October 2025 |
| License type | Per device (1 key = 1 PC) |
No, ESU is optional. However, without it, Windows 10 will no longer receive any security patches after 14 October 2025, leaving the computer exposed to attacks that exploit newly discovered vulnerabilities. For businesses, it is effectively essential.
Windows 10 will continue to work, but it will not receive any security patches. New vulnerabilities will remain unpatched, exposing the system over time to increasing risks such as ransomware, exploits, and data breaches.
You can activate the ESU key using the command line (slmgr /ipk) or Group Policy (GPO) in a domain environment. Once activated, security patches will start arriving automatically through Windows Update. We send step-by-step activation instructions with the key.
Yes. The ESU program is cumulative — Year 2 requires prior purchase and activation of Year 1. Years cannot be skipped. If you are planning longer protection, start with Year 1.
No. ESU covers critical and important security patches only. New features, performance improvements, and quality updates are not part of the ESU program.
Your ESU key is sent instantly by email after payment is confirmed — usually within 5 minutes. You will receive detailed step-by-step activation instructions (slmgr/GPO).