Windows Server 2025 Gets Hotpatching Support Beginning July 1, 2025

Microsoft announced that hotpatching support for Windows Server 2025 will become generally available as a subscription service starting July 1, 2025.

This move expands a key feature-previously exclusive to Azure-based servers-for broader use in on-premises and multicloud environments via Azure Arc.

What is Hotpatching?

Hotpatching is a revolutionary update mechanism that patches the in-memory code of running processes, eliminating the need for immediate server reboots.

Unlike traditional updates that require scheduled downtime and post-update restarts, hotpatching allows administrators to deploy crucial security and feature patches while maintaining higher server availability.

The benefits are clear:

• Higher uptime: Fewer service disruptions, as most updates don’t require a reboot.
• Faster deployment: Smaller update packages and streamlined orchestration through Azure Update Manager enable quicker rollouts.
• Reduced vulnerability window: Immediate patching means threats are neutralized sooner.

Administrators can currently preview hotpatching free of charge. However, with the official launch, subscription pricing will begin at ...