Microsoft Announces Major Quantum-Resistant Update for Windows TLS

Microsoft's latest Patch Tuesday introduces hybrid post-quantum key exchange in Schannel for Windows 11 and Server 2025. This upgrade allows organizations to improve security against future quantum threats. Notably, the update requires TLS 1.3 to function, leaving TLS 1.2 users unprotected. Several hybrid configurations offer varying levels of security. Activating these features demands administrator action. Quantum computing's rise underlines the urgency of this update. Microsoft aims for industry-wide post-quantum readiness by 2029.