Windows Server 2025 will introduce a feature called 'Hotpatching' that allows critical patches to be installed without restarting the endpoint. This feature will reduce the number of mandatory reboots from twelve to quarterly scheduled reboots, improving efficiency and security. Hotpatching will be accessible through Azure Arc, enabling management across different platforms, including physical servers and virtual machines on Hyper-V and VMware, provided they meet Microsoft's Virtualization Based Security standard. To activate Hotpatching on evaluation machines, users must enable the service via the Azure Arc agent, run the Windows Server 2025 Datacenter evaluation, have the KB5040435 July Security update installed, and maintain a connection to Azure Arc.