| Change | Description | |--------|-------------| | | Windows Update client now queries multiple Azure CDN endpoints and selects the optimal node based on latency and compliance tags. | | Enhanced P2P Protocol (WP2P v2) | Utilizes QUIC‑based transport for secure, low‑overhead peer exchange of update payloads. | | Dynamic Bandwidth Throttling API | Administrators can programmatically set per‑segment throttling limits via the Set-WUBandwidthPolicy PowerShell cmdlet. | | Telemetry Opt‑Out Switch | New registry key HKLM\Software\Microsoft\Windows\CurrentVersion\DeliveryOptimization\DoNotTrack to suppress telemetry related to download performance. |
KB 85522 marks a decisive evolution in how Windows 10 updates are downloaded and distributed. By embracing multi‑source CDN delivery and a secure, QUIC‑based P2P layer, Microsoft addresses longstanding bandwidth and latency concerns while preserving security and compliance. Properly integrating the new mechanisms—through updated Group Policies, SCCM configurations, and licensing awareness—yields tangible benefits for organizations of all sizes. kb85522 windows 10 download