---
title: "Disabling ETW autologger sessions: what they record and what you lose"
description: "Autologgers are event tracing sessions Windows starts at boot to record diagnostics for networking, updates and telemetry. What it changes and how to undo it."
url: https://frozentweaks.com/tweaks/disable-etw-autologgers
author: Frost LIVE, Founder of Frozen Tweaks
published: 2026-10-08
updated: 2026-10-08
category: "Network"
source: Frozen Tweaks (https://frozentweaks.com)
---

# Disabling ETW autologger sessions: what they record and what you lose

**Short answer:** Autologgers are event tracing sessions Windows starts at boot to record diagnostics for networking, updates and telemetry. Each has a Start value; 0 keeps it from starting. This tweak switches off a set of diagnostic sessions. In the registry it sets Start to 0 under HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\DiagLog, and 2 more values.

## In the app

- Switch: Disable ETW Autologgers (Network, Pro, Advanced)
- Undo: Yes. Switching it off sets a standard Windows value, which may not be exactly how you had it.
- Catalog row: https://frozentweaks.com/tweaks#t-1073

## What it does

Autologgers are event tracing sessions Windows starts at boot to record diagnostics for networking, updates and telemetry. Each has a Start value; 0 keeps it from starting. This tweak switches off a set of diagnostic sessions.

In the app the switch is called "Disable ETW Autologgers", described there as: Stops verbose network/diag autologgers that add CPU jitter.

## When it helps

- Removing constant low-level logging, which adds a little disk and processor work.

## When it hurts

- Windows keeps fewer diagnostics, so troubleshooting network or update problems gets harder.
- The saving is small on a modern PC.

## 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 |
| --- | --- | --- | --- |
| `HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\DiagLog` | `Start` | `0` | 1 |
| `HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\WiFiSession` | `Start` | `0` | 1 |
| `HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\LwtNetLog` | `Start` | `0` | 1 |

Source: Tweaks/etw_autologgers_off.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 "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\DiagLog" /v "Start" /t REG_DWORD /d 0 /f
reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\WiFiSession" /v "Start" /t REG_DWORD /d 0 /f
reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\LwtNetLog" /v "Start" /t REG_DWORD /d 0 /f
```

Put it back:

```bat
reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\DiagLog" /v "Start" /t REG_DWORD /d 1 /f
reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\WiFiSession" /v "Start" /t REG_DWORD /d 1 /f
reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\LwtNetLog" /v "Start" /t REG_DWORD /d 1 /f
```

See what it is set to now:

```bat
reg query "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\DiagLog" /v "Start"
```

## How to undo it

Switch the tweak off in Frozen Tweaks. It writes Start back to 1, Start back to 1, Start back to 1.

## Verdict

Safe for a gaming PC, with a benefit you are unlikely to measure.

## Questions

### What does the "Disable ETW Autologgers" tweak change in Windows?

In the registry it sets Start to 0 under HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\DiagLog, and 2 more values. The full list is in the table on this page, read from the app's source.

### What is the standard value of Start?

Frozen Tweaks writes 1 when you switch the tweak off, which is the value it treats as the Windows standard. With the tweak on, Start is 0.

### Is "Disable ETW Autologgers" safe to switch on?

Safe for a gaming PC, with a benefit you are unlikely to measure. The main cost: Windows keeps fewer diagnostics, so troubleshooting network or update problems gets harder.

### How do I undo it?

Switch the tweak off in Frozen Tweaks. Switching it off sets a standard Windows value, which may not be exactly how you had it.

### Is "Disable ETW Autologgers" free in Frozen Tweaks?

It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

## Related guides

- [How to Reduce Input Lag on PC: The Whole Latency Chain](https://frozentweaks.com/guides/reduce-input-lag)
- [Windows 11 Gaming Optimization: What Still Works in 2026](https://frozentweaks.com/guides/windows-11-gaming-optimization)

## More tweak explainers

- [WLAN AutoConfig (WlanSvc)](https://frozentweaks.com/tweaks/disable-wlan-autoconfig)
- [SSDP Discovery and UPnP Device Host](https://frozentweaks.com/tweaks/disable-upnp-ssdp-services)
- [Offline Files (CscService)](https://frozentweaks.com/tweaks/disable-offline-files-service)

---
Written by Frost LIVE, founder of Frozen Tweaks. Canonical version: https://frozentweaks.com/tweaks/disable-etw-autologgers