---
type: concept
title: Windows 10 ESU (Extended Security Updates)
created: 2026-07-01
updated: 2026-07-01
tags: [security, windows-10, licensing]
related: [windows-11-migration-guide]
sources: ["output/rz_uni_greifswald_de_support_faq_software.md"]
---
# Windows 10 ESU (Extended Security Updates)

The ESU program is a paid service provided by Microsoft that allows devices that are not compatible with Windows 11 to continue receiving critical security updates for up to three years after the official end-of-support date (October 14, 2025).

## Prerequisites for Activation
To participate in the ESU program, the following conditions must be met:
- **OS Version**: Windows 10 22H2.
- **Updates**: Update KB5046613 or newer must be installed.
- **Permissions**: Administrator rights on the device.
- **Connectivity**: A valid IP address in the **wired** university network (`141.53.*.*`). 

**Critical Note**: Activation via VPN, WLAN, or Guest networks is **not possible** for ESU.

## Procurement
Licenses must be procured through the [[referat-beschaffung]]. Upon procurement, users receive a link to the URZ-provided activation assistant.