The Internal Surveillance
Windows 11 includes an internal privacy setting known as “App Diagnostics.” By default, the operating system allows installed applications to query a centralized Windows API to pull diagnostic information about other applications running on your machine. This means a free game from the Microsoft Store could theoretically request a list of the background processes currently executing in your RAM to check for “compatibility.” For professionals who demand absolute sandboxing and refuse to let applications spy on their broader workflow, this internal diagnostic bridge must be destroyed.
How to Disable App Diagnostics
You can permanently paralyze the operating system’s internal reporting API via the Privacy settings.
- Click the Start Menu and type Settings, or press the Windows Key + I.
- In the left-hand sidebar, click on Privacy & security.
- Under the “App permissions” section, scroll down and click on App diagnostics.
- Locate the master toggle switch labeled “Let apps access diagnostic information about other apps.”
- Toggle this switch to the Off position.
Absolute App Sandboxing
The change takes effect instantly. Windows 11 will completely terminate the background API broker responsible for answering inter-application diagnostic queries. The operating system is now technically barred from providing a process list to requesting software. If an application attempts to execute a diagnostic scan to see what else you are running, the API call will instantly auto-reject in the background, returning a null value. This guarantees strict sandboxing, ensuring that every program remains completely blind to the rest of your private desktop environment.