---
title: "Block app access to diagnostic information about other apps (appDiagnostics)"
description: "Store apps can ask to read diagnostic information about other running apps, such as their names and resource use. What it changes and how to undo it."
url: https://frozentweaks.com/tweaks/block-app-diagnostics-access
author: Frost LIVE, Founder of Frozen Tweaks
published: 2026-10-08
updated: 2026-10-08
category: "Security"
source: Frozen Tweaks (https://frozentweaks.com)
---

# Block app access to diagnostic information about other apps (appDiagnostics)

**Short answer:** Store apps can ask to read diagnostic information about other running apps, such as their names and resource use. Setting the appDiagnostics consent value to Deny refuses that for every app. In the registry it sets Value to Deny under HKCU\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\appDiagnostics.

## In the app

- Switch: Block App Diagnostics Access (Security, Free, Standard)
- Undo: Yes. Switching it off puts back exactly what was there before, value for value.
- Catalog row: https://frozentweaks.com/tweaks#t-1168

## What it does

Store apps can ask to read diagnostic information about other running apps, such as their names and resource use. Setting the appDiagnostics consent value to Deny refuses that for every app.

In the app the switch is called "Block App Diagnostics Access", described there as: Stops Store apps from reading diagnostic information about other running apps.

## When it helps

- Privacy: apps cannot see what else is running.

## When it hurts

- An app that shows system or process information may show less.

## What it writes

Read from the app's source. "Switching it off" is what the app writes when you turn the tweak off again.

Registry values:

| Key | Value | With the tweak | Switching it off |
| --- | --- | --- | --- |
| `HKCU\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\appDiagnostics` | `Value` | `Deny` | Your previous value (saved before the change, or deleted if there was none). Windows default: Allow |

Source: Tweaks/pack_extra.hpp in the app's source, app 2.0.0, checked 2026-10-08.

## The same change by hand

Run in a Command Prompt opened as administrator. Make a restore point first.

```bat
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\appDiagnostics" /v "Value" /t REG_SZ /d "Deny" /f
```

Put it back:

```bat
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\appDiagnostics" /v "Value" /t REG_SZ /d "Allow" /f
```

See what it is set to now:

```bat
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\appDiagnostics" /v "Value"
```

## How to undo it

Switch the tweak off in Frozen Tweaks. The app saved what each value was before the change and writes exactly that back, or removes the value if it did not exist.

## Verdict

A safe privacy setting.

## Questions

### What does the "Block App Diagnostics Access" tweak change in Windows?

In the registry it sets Value to Deny under HKCU\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\appDiagnostics.

### What is the default value of Value?

The Windows default of Value is Allow. Frozen Tweaks sets it to Deny, and switching the tweak off puts back the value you had before.

### Is "Block App Diagnostics Access" safe to switch on?

A safe privacy setting. The main cost: An app that shows system or process information may show less.

### How do I undo it?

Switch the tweak off in Frozen Tweaks. Switching it off puts back exactly what was there before, value for value.

### Is "Block App Diagnostics Access" free in Frozen Tweaks?

Yes. It is one of the free tweaks, with no time limit.

## Related guides

- [Is PC Optimization Software Safe? What to Check Before Installing](https://frozentweaks.com/guides/is-pc-optimization-software-safe)
- [Windows 11 Gaming Optimization: What Still Works in 2026](https://frozentweaks.com/guides/windows-11-gaming-optimization)

## More tweak explainers

- [Edge data collection](https://frozentweaks.com/tweaks/disable-edge-data-collection)
- [Chrome usage reporting](https://frozentweaks.com/tweaks/disable-chrome-usage-reporting)
- [Firefox telemetry](https://frozentweaks.com/tweaks/disable-firefox-telemetry)

---
Written by Frost LIVE, founder of Frozen Tweaks. Canonical version: https://frozentweaks.com/tweaks/block-app-diagnostics-access