How do I disable hidden telemetry and diagnostic data reporting in Windows 11?

SET DATA COLLECTION TO THE MINIMUM LEVEL AND DISABLE TRACKING SERVICES.

The Windows OS collects detailed info about app launch frequency, typing errors, visited section history, and hardware configurations by default. Fully restricting background services prevents user activity leaks to developer servers.

The Diagnostic Data User Event Collection Mechanism

Telemetry services constantly compile system log packets and send them in the background over an encrypted channel. These reports may include typing fragments from autocomplete, RAM dumps during app crashes, and unique hardware IDs of your motherboard and drives.

Steps to Reduce Your System Digital Footprint

Turn off optional diagnostic data submission under "Privacy & Security".
Block the system from personalizing ads based on collected language and behavioral profiles.
Disable the Diagnostic Tracking Service (DiagTrack) via the services management console.
Turn off voice activation, search history logging, and handwriting data collection.