avast-browser.exe

Avast Secure Browser

Application ProcessSafeWeb Browser

CPU Usage

4-20%

Memory

120-360 MB

Location

C:\Program Files (x86)\AVAST Software\Browser\Application\avast-browser.exe

Publisher

AVAST Software s.r.o.

Quick Answer

avast-browser.exe is safe. Avast Secure Browser is Avast's Chromium-based browser with built-in security features, designed to run in isolated processes for stability and protection.

Is it a Virus?

✔ NO - Safe

Must be in C:\Program Files (x86)\AVAST Software\Browser\Application\avast-browser.exe

Can I Disable?

YES - You can disable, but it will reduce real-time protection, anti-tracking, and auto-update features.

Disabling may stop Avast Browser protections and automatic updates

Multiple Processes?

ℹ Avast Secure Browser uses a multi-process architecture; some processes run in the background for protection.

Background protection services may run in the background

What is avast-browser.exe?

avast-browser.exe is the executable for Avast Secure Browser, a Chromium-based web browser from AVAST Software. It includes built‑in privacy and security features like anti‑tracking, Safe Browsing, and Avast protection services. It runs in a multi‑process architecture to improve stability and security.

This design improves security and stability. If one tab crashes, other tabs continue working. Each process is sandboxed, preventing malicious websites from accessing your system or other tabs.

Quick Fact: Avast Secure Browser emerged to integrate Avast protections directly into the browser, offering sandboxed tab processes and background security checks.

Types of Avast Secure Browser Processes

Browser Process: Main Avast Secure Browser window and user interface (1 instance)
Renderer Process: Each tab and iframe (multiple instances)
GPU Process: Hardware acceleration and graphics rendering
Extension Process: Each extension in Avast Browser gets its own process
Plugin Process: For plugins like PDF viewer
Utility Process: Background tasks and network services

Is avast-browser.exe Safe?

Yes, avast-browser.exe is safe when it's the legitimate Avast Secure Browser file from Avast Software downloaded from official sources (avast.com or the Avast installer).

Is avast-browser.exe a Virus or Malware?

The real avast-browser.exe is NOT a virus. However, malware sometimes disguises itself using similar names to trick users.

How to Tell if avast-browser.exe is Legitimate or Malware

File Location:: Must be in C:\Program Files (x86)\AVAST Software\Browser\Application\avast-browser.exe. Any avast-browser.exe elsewhere is suspicious.
Digital Signature:: Right-click the file in Explorer -> Properties -> Digital Signatures. Should show "AVAST Software s.r.o." as signer.
Resource Usage:: Normal usage is 4-20% CPU per tab, 120-360 MB total memory. Extremely high usage when the browser is closed is suspicious.
Behavior:: Avast Secure Browser should run when you open the browser. Multiple instances when the browser isn't opened indicates malware or a hijack.

Red Flags: If avast-browser.exe is located in unusual folders (like Temp, AppData\Roaming, or System32), runs when Avast Browser isn't open, has no digital signature, or uses excessive resources constantly, scan your system with antivirus software immediately. Beware of similarly-named files from untrusted sources.

Why Is avast-browser.exe Running on My PC?

avast-browser.exe runs when you open Avast Secure Browser or when Avast services are configured to run background protection or automatic checks.

Reasons it's running:

Active Browser Use: You're currently browsing with Avast Secure Browser - each tab creates a separate process
Background Protections: Real-time protection, anti-tracking, and Safe Browsing checks run in the background even with the UI open
Startup Program: Avast Secure Browser is configured to launch automatically when Windows starts
Update Checks: The browser may perform background update checks and fetch security updates
Avast Services: Avast's protection services and browser integration components may start drivers or background tasks

Can I Disable or Remove avast-browser.exe?

Yes, you can disable avast-browser.exe. It's safe to close Avast Secure Browser when not in use, and you can uninstall Avast Secure Browser entirely if you prefer another browser.

How to Stop avast-browser.exe

End Individual Tabs: Press Shift+Esc in Avast Secure Browser to open Task Manager and end specific tabs or extensions
Close Browser: Click the X button or use Ctrl+Shift+W to close all Avast Secure Browser windows
End All Processes: Open Windows Task Manager (Ctrl+Shift+Esc), find avast-browser.exe, right-click → End Task
Prevent Startup: Task Manager → Startup tab → Disable Avast Secure Browser
Stop Background Apps: Avast Secure Browser settings → Privacy or System → Disable 'Continue running background apps when Avast Secure Browser is closed'

How to Uninstall Avast Secure Browser

✔ Windows Settings → Apps → Apps & Features → Avast Secure Browser → Uninstall
✔ Control Panel → Programs → Uninstall a program → Avast Secure Browser → Uninstall
✔ Consider alternative browsers: Google Chrome, Microsoft Edge, Mozilla Firefox

Common Problems: High CPU or Memory Usage

If avast-browser.exe is consuming excessive resources:

Common Causes & Solutions

Too Many Tabs Open: Each tab uses 100-300+ MB. Close unused tabs or use tab management extensions.
Resource-Heavy Extensions: Extensions run continuously in background. Go to avast-browser://extensions and disable unnecessary ones.
JavaScript-Heavy Websites: Modern web apps (Gmail, Facebook, YouTube) consume significant resources. Close or reload problematic tabs.
Malicious Extensions: Some extensions contain malware or cryptocurrency miners. Remove suspicious extensions immediately.
Outdated Browser Version: Update Avast Secure Browser to latest version: avast-browser://settings/help
Hardware Acceleration Issues: Try disabling: Settings → Advanced → System → 'Use hardware acceleration when available'

Quick Fixes:
1. Quick Fixes:
2. 1. Press Shift+Esc to open Avast Browser Task Manager and identify high-usage tabs/extensions
3. Clear browsing data: Ctrl+Shift+Delete (select Cached images and files)
4. Disable unnecessary extensions in avast-browser://extensions
5. Update Avast Secure Browser: avast-browser://settings/help
6. Enable Memory Saver: Settings → Performance → Memory Saver

Frequently Asked Questions

Is avast-browser.exe a virus?

The legitimate avast-browser.exe from Avast Software is not a virus. Verify the file path is in C:\Program Files (x86)\AVAST Software\Browser\Application\avast-browser.exe and check for a valid digital signature from AVAST Software s.r.o.

Why is avast-browser.exe using so much CPU?

High CPU usage is usually caused by specific tabs running JavaScript-heavy content, auto-playing videos, or rogue extensions. Open Avast Browser Task Manager (Shift+Esc) to identify the culprit, close or disable it, and check for updates.

Can I delete avast-browser.exe?

Yes, you can uninstall Avast Secure Browser through Windows Settings → Apps. Your browsing data may be removed if not synced. You can reinstall Avast Secure Browser or switch to another browser.

Can I disable avast-browser.exe?

Yes, you can close Avast Secure Browser anytime by clicking X or ending the process in Task Manager. To prevent startup, disable it in Task Manager → Startup tab. To stop background processes, adjust Avast Browser settings.

Why is avast-browser.exe running at startup?

Avast Secure Browser may launch at Windows startup depending on Avast settings. Disable it via Task Manager → Startup or Avast preferences to stop automatic launching.

Why are there many avast-browser.exe processes?

Avast Secure Browser uses a multi-process architecture for security and stability. Each tab, extension, and plugin runs in a separate process. You can view process details in the Avast Browser Task Manager (Shift+Esc).

How do I reduce Avast Browser's memory usage?

Close unused tabs, disable unnecessary extensions (avast-browser://extensions), clear cache (Ctrl+Shift+Delete), enable Memory Saver in Settings → Performance, and consider using tab suspension extensions.