line-audio-core.exe

LINE Desktop Audio Core

System ProcessSafeAudio Engine

CPU Usage

2-12%

Memory

60-200 MB

Location

C:\Program Files\LINE\Line Audio Core\line-audio-core.exe

Publisher

LINE Corporation

Quick Answer

line-audio-core.exe is safe. It is LINE's official audio processing component that handles voice calls, voice messages, and real-time audio routing for LINE apps.

Is it a Virus?

✔ NO - Safe

Must be in C:\Program Files\LINE\Line Audio Core\line-audio-core.exe

Can I Disable?

✔ YES - May disable LINE audio features

Disabling may stop LINE audio calls, voice messages, and background audio routing.

What is line-audio-core.exe?

line-audio-core is the dedicated audio processing engine used by LINE desktop and mobile apps to manage real-time voice calls, voice messages, and audio routing. It coordinates capture, processing (noise suppression and echo cancellation), and playback across active LINE conversations with low latency and high stability.

It runs in a dedicated, sandboxed process and uses Windows WASAPI for low latency audio. It handles mic input, echo cancellation, and playback routing to LINE peers, keeping conversations smooth even with multiple participants.

Quick Fact: Line Audio Core is designed to operate with LINE's encrypted sessions, using sandboxed processes to isolate audio tasks from the user interface.

Types of Line Audio Core Processes

Audio Engine Process: Core real-time audio processing for calls and recordings
Input Handler Process: Captures microphone input; applies gain control and noise suppression
Output Handler Process: Manages speaker/headphone playback and latency optimization
Network Sync Process: Transmits and receives audio streams with LINE servers
Policy & Sandbox Process: Applies permission controls and sandboxing for audio data

Is line-audio-core Safe?

Yes, line-audio-core is safe when it is the legitimate file from LINE Corporation downloaded via official LINE installers or LINE app packages.

Is line-audio-core a Virus or Malware?

The legitimate line-audio-core is NOT a virus. Malware may mimic names; verify path and digital signature.

How to Tell if line-audio-core is Legitimate or Malware

File Location:: Must be in C:\Program Files\LINE\Line Audio Core\line-audio-core.exe or C:\Program Files (x86)\LINE\Line Audio Core\line-audio-core.exe. Any other location is suspicious.
Digital Signature:: Right-click the file in Explorer -> Properties -> Digital Signatures. Should show "LINE Corporation".
Resource Usage:: Normal usage is 2-12% CPU during calls, 60-200 MB memory. Extremely high usage when LINE is idle is suspicious.
Behavior:: LINE audio core should start with LINE or when you initiate a call. If it runs independently when LINE is closed, investigate with antivirus.

Red Flags: If line-audio-core.exe is located in unusual folders (like Temp, AppData, or System32), runs when LINE isn't actively used, has no valid signature, or uses high CPU continuously, scan your system immediately. Look for similarly named files like 'line-audio-core.exe.bak'.

Why Is line-audio-core Running on My PC?

line-audio-core runs when LINE desktop or mobile apps start, and when a call or audio message is initiated. It may also run briefly in the background to prepare audio paths for quick conversations.

Reasons it's running:

Active Call or Recording: You are in a voice call or actively recording audio; the core handles capture and playback in real time.
Background Audio Features: LINE may keep audio services ready for push-to-talk, voice messaging, and notification sounds.
Startup Launch: LINE apps may initialize audio components at Windows startup for faster readiness.
Notifications and Alerts: Audio routing is used for ringtones, message alerts, and call notifications.
Hands-Free / Hotword Features: If LINE supports hands-free or quick-action audio, the core may run to maintain readiness.

Can I Disable or Remove line-audio-core?

Yes, you can disable line-audio-core. It will stop LINE's audio processing features when LINE is not actively used, and may impact calls and voice messages until re-enabled.

How to Stop line-audio-core

Close LINE Apps: Close all LINE windows to ensure audio processing halts
End Background Audio Services: In LINE Settings > Audio, turn off 'Keep audio running in background' (if available)
End line-audio-core Process: Open Task Manager (Ctrl+Shift+Esc) -> Processes tab -> locate 'line-audio-core.exe' -> End Task
Disable Startup: Task Manager > Startup tab > disable LINE Desktop or LINE Audio Core startup entry
Restart LINE: Reopen LINE to apply changes and confirm audio features are fully stopped

How to Uninstall LINE Desktop (and line-audio-core)

✔ Windows Settings → Apps → Apps & Features → LINE Desktop → Uninstall
✔ Control Panel → Programs → Uninstall a program → LINE Desktop → Uninstall
✔ If you need audio-only removal, consider keeping LINE installed but turning off audio features in LINE settings

Common Problems: High CPU or Memory Usage

If line-audio-core is consuming excessive resources:

Common Causes & Solutions

Idle LINE with Background Audio Enabled: Disable background audio in LINE Settings or fully quit LINE when not in use.
Multiple Active Calls or Conferencing: Close unused conversations; reduce participants; ensure proper audio routing settings.
Outdated LINE Desktop Version: Update LINE to the latest build which includes audio performance fixes.
Faulty or Conflicting Audio Drivers: Update audio drivers from the manufacturer; reinstall if necessary; test with default device.
Third-Party Audio Software Interference: Disable or uninstall other audio processing tools that may compete for drivers/resources.
Hardware Acceleration Issues: In LINE or OS settings, disable hardware acceleration for audio processing and test again.

Quick Fixes:
1. Quick Fixes:
2. 1. Open LINE Task Manager (if available) or Windows Task Manager and identify line-audio-core.exe activity.
3. 2. Update LINE to the latest version and apply any audio-related fixes.
4. 3. In LINE Settings > Audio, disable 'Keep audio running in background' and restart LINE.
5. 4. Update or reinstall audio drivers and ensure no conflicting audio software is active.
6. 5. If issues persist, reboot the PC to reset audio subsystems.

Frequently Asked Questions

Is line-audio-core safe?

Yes. The legitimate line-audio-core.exe from LINE Corporation is a trusted audio processing component used by LINE apps. Verify its location (C:\Program Files\LINE\Line Audio Core\line-audio-core.exe) and signature.

What is line-audio-core?

It's LINE's dedicated audio processing engine that handles mic input, echo cancellation, noise suppression, and playback routing for voice calls and messages.

Why is line-audio-core running at startup?

LINE may initialize audio components at startup to reduce latency for calls and messages. This helps deliver faster, smoother audio when you open LINE.

Can I disable line-audio-core without uninstalling LINE?

Yes. You can disable background audio in LINE settings or end the line-audio-core process via Task Manager. This may impact real-time audio features until re-enabled.

Where is line-audio-core installed on Windows?

Typically in C:\Program Files\LINE\Line Audio Core\line-audio-core.exe or C:\Program Files (x86)\LINE\Line Audio Core\line-audio-core.exe, depending on your LINE installation.

How can I reduce LINE's audio latency or CPU usage?

Update LINE, disable unnecessary background features, update audio drivers, and consider turning off hardware acceleration. Closing unused calls and reducing open LINE sessions also helps.