The UK’s Department for Environment, Food and Rural Affairs (Defra) has allocated £312 million to upgrade its IT systems to Windows 10, just months before Microsoft ends support for the operating system on October 14, 2025. Defra faces challenges in migrating thousands of devices, with 24,000 outdated machines incompatible with newer systems. A survey indicates that 90% of UK finance firms also struggle with outdated IT infrastructure, increasing cybersecurity risks. The National Cyber Security Centre has warned organizations to prepare for migrations to Windows 11. Defra's £312 million expenditure includes software licenses, consulting fees, and hardware refreshes, but additional risks such as increased downtime and regulatory fines could lead to significant consequences. The department's outdated devices do not meet Windows 11’s TPM 2.0 requirements, complicating the upgrade process. Experts advocate for an upgrade to Windows 11, but extensive compatibility testing and user training are necessary. Government oversight bodies are scrutinizing Defra’s expenditures, and discussions suggest alternatives like Windows 10 IoT Enterprise LTSC, which offers updates until 2032. The financial implications of Microsoft’s Extended Security Updates pricing add strain, as costs double in subsequent years. The urgency for upgrades is emphasized by the potential cybersecurity risks, with experts warning of vulnerabilities affecting national food security and environmental initiatives.