• Website
  • Server status
  • API documentation
  • Blog
Telegram Icon Community
EN
English
Português
Русский
中文 (中国)
Tiếng Việt
Log in Try for €3.99
  • Website
  • Server status
  • API documentation
  • Blog
  • Telegram Icon Community
  • English (US)
    English
    Português
    Русский
    中文 (中国)
    Tiếng Việt
Log in View Plans

Common errors

This section has step-by-step fixes for launch failures, connection errors, access issues, and more – troubleshoot quickly and get back to work!

Contact Us

If you still have questions or prefer to get help directly from an agent, please submit a request.
We’ll get back to you as soon as possible.

Please fill out the contact form below and we will reply as soon as possible.

  • Troubleshooting basics
  • Common errors
  • Common issues
  • Home
  • Multilogin X
  • Solutions to common issues
  • Common errors
  • How to fix “ERR_CONNECTION_CLOSED” error

How to fix “ERR_CONNECTION_CLOSED” error

Written by Tania N ( Updated on February 13th, 2025 )

Updated on February 13th, 2025

Sometimes you may get the “ERR_CONNECTION_CLOSED” error when starting a profile.

How To Fix "ERR_CONNECTION_CLOSED" in Chrome (13 Methods)

Testing the proxy

This error typically means your proxy is offline or not working properly. Don’t worry – we’ve got multiple ways to fix the issue.

Test your proxy

How to test a proxy

Most profile issues, according to our users, are caused by a malfunctioning proxy. But how can you tell if the problem is with Multilogin or your proxy?

The answer: check your proxy connection.

Testing your proxy outside the app helps determine the root cause of the issue:

  • If the proxy works outside Multilogin X, the issue is likely with the app
  • If the proxy doesn’t work anywhere, the issue is with the proxy itself

In this article, we’ll guide you through three simple options to test your proxy and pinpoint the issue. You will learn how to test the proxy both in Multilogin and outside the app. 

If your system time is set manually, it can cause connection issues. In this case, sync your timezone with the internet to fix the issue. This simple step often restores normal functionality!

 

Option 1: check proxy with Multilogin 

This is the simplest and quickest way to test a proxy:

  1. Open your profile settings and navigate to the "Proxy" section
  2. Click "Check proxy" or "Get new IP" – this will test the connection

Here’s what the results mean:

  • Proxy check passed: great news! Multilogin connected to your proxy and got everything it needs. If you still can’t launch the profile, share the error with us so we can assist!
  • Proxy check failed: hmm, looks like Multilogin couldn’t connect. This might mean your proxy is offline. No stress – keep reading for more ways to troubleshoot

Multilogin X

 
 

Multilogin 6

Check proxy

 
 

Option 2: check proxy with browser extensions

Want another way to check if your proxy is working? Use a browser extension to test it in a regular Firefox and Chrome browser:

  • If the proxy doesn’t work in a regular browser (you can’t load any pages), contact your proxy provider for help
  • If the proxy works in a regular browser but not in Multilogin, let our support team know so we can investigate!

If your proxy doesn’t work in a regular Chrome or Firefox browser, it won’t work in Multilogin either.

No worries, though – your proxy provider can help! They might:

  • Fix a server-side issue
  • Provide you with a new proxy
  • Adjust some settings to get things running

Reach out to them, and they’ll sort it out for you!

 

Option 3: check proxy with local settings

Finally, you can check your proxy by adding it to your device’s network settings. Then, try loading a website in your browser.

Here’s what to do next:

  • If the proxy doesn’t work (you can’t load any pages), contact your proxy provider for help
  • If the proxy works fine on your device but not in Multilogin, reach out to our support team – we’ve got your back!

Windows

  1. Open the start menu in the bottom left corner and click the gear icon
  2. In the “Windows Settings” menu, go to “Network & Internet”

  1. Click “Proxy” in the left panel to access proxy settings

  1. Proxy setup
  • Automation setup: enable the “Use setup script” option – you'll get the PAC file path in the “Script address” section. 

Ensure the PAC file is saved on your computer, and there’s a complete path to it.

 
  • Manual setup:
    1. Under “Manual proxy setup” enable the “Use a proxy server” option
    2. Enter your proxy details into the “Address” and “Port” sections
    3. Enable “Don’t use the proxy server for local (intranet) addresses”
 
 

macOS

  1. Open your system settings and type “proxies” in the search field

  1. Click “Proxies” in the search results to see a list of proxy protocols

  1. Proxy setup
  • Automation setup: Enable the “Automatic proxy configuration” option – you'll get the PAC file path in the “URL” section

Ensure the PAC file is saved on your computer, and there’s a complete path to it.

 
  • Manual setup :
    1. Enable the “Web Proxy (HTTP)” or “Secure Web Proxy (HTTPS)” option
    2. Enter your proxy details into the “Server” and “Port” sections
 
 

Learn how to manage multiple Reddit accounts safely – check out our Reddit proxy & antidetect guide for tips on avoiding bans, blocks, and detection.

 

 

Proxy test is fine?

How to fix profile launch or proxy connection issues

Most profile issues happen because of a broken proxy. Before you do anything else, test your proxy first. Use the guide How to test a proxy to check if your proxy works properly in Multilogin.

Once you're sure the proxy is fine, you can move on to the steps below to fix things. Let’s get it sorted!

Check the agent

Look at the top right corner of your screen – see your agent status? It should say "Agent connected". 

The agent is the desktop app that keeps things running smoothly. It’s what lets you launch browser profiles. If it’s not connected, you won’t be able to test your proxy in a profile.

Quick tip: disconnect and reconnect the agent. This restarts important Multilogin processes and often fixes the issue. Need help? Check the guide How to disconnect and reconnect the agent in Multilogin X for step-by-step instructions. You got this! 👍

 
Your browser does not support HTML5 video.

Check 3rd-party apps

3rd-party apps

Apps like antivirus programs, firewalls, VPNs, or proxy tools (for example, Proxifier, SocksEscort) can interfere with Multilogin.

Here are some quick fixes:

  • Uninstall these apps
  • If you do need them, disable the apps temporarily or add Multilogin to their whitelist in the settings

This should help resolve the issue and keep everything running smoothly!

How to resolve conflicts with 3rd-party apps on Windows

Antivirus apps

  1. Go to “Settings” → “Privacy & security” → “Windows Security” → “Virus & threat protection”
Zight 2025-2-5 at 4.09.31 PM
  1. Choose “Manage settings” and then turn off all the parameters in the displayed window
 
 

Firewalls

  1. Go to “Settings” → “Privacy & security” → “Windows Security” → “Firewall & network protection”
Zight 2025-2-5 at 4.19.55 PM
  1. Turn off all the parameters in the displayed window
 
 

VPNs

Uninstall VPN applications:

  1. Open “Control Panel” →” Programs” → “Programs and Features”
  2. Right-click the VPN applications → “Uninstall”
Zight 2025-2-6 at 11.14.35 AM

Disable VPN applications: open the menu in the task bar → right-click the VPN apps → click “Quit” 

Zight 2025-2-6 at 11.21.47 AM

Turn off VPN extensions in browser: don't forget to check and turn off VPN extensions that you installed in your browser, for example, Chrome:

 
 

How to resolve conflicts with 3rd-party apps on macOS

macOS security system

If the application got restricted from the macOS security system, you can access it by the following way:

  1. Open “System Settings” → “Privacy & Security” → “Security”
  2. Click “Open anyway” for the apps

It is also recommended to change “Allow applications from” value to “App Store & Known Developers”.

 
Zight 2025-2-8 at 10.32.54 AM
 
 

Antivirus apps

  1. Go to “Finder” → “Go” → “Application”
  2. Right click the antivirus apps → “Move to Trash/ Move to Bin”
Zight 2025-2-8 at 2.03.24 PM

Some antivirus software for macOS has their own uninstallation tool (e.g., Kaspersky and Avast). 

 
 
 

Firewalls

  1. Open “Apple menu” → “System Preferences” → “Security & Privacy”
  2. Go to the “Firewall” tab and click “Turn off Firewall”
 
 

VPNs

Uninstall VPN applications:

  1. Go to “Finder” → “Go” → “Application”
  2. Right-click the VPN apps → “Move to Trash/ Move to Bin”
Zight 2025-2-8 at 2.03.24 PM

Disable VPN applications: right-click the VPN apps on the menu bar → choose “Quit <name of app>”. 

Turn off VPN extensions in browser: don't forget to check and turn off VPN extensions that you installed in your browser, for example Safari:

  1. Choose “Safari” → “Settings” (or “Preferences”) → click “Extensions”
  2. To turn off an extension, deselect its checkbox
 
 

Check the ISP

ISP

Sometimes, internet service providers (ISPs) block proxy providers or even Multilogin itself. Here’s how to test and work around it:

  • Try connecting through a VPN: this can bypass ISP restrictions
  • Switch networks: use a different Wi-Fi, or turn your phone into a hotspot with mobile data
  • Check your speed: if your current ISP is slow, changing networks might also improve performance.

If the issue resolves with these steps, it’s likely your ISP causing the trouble. 

Refresh components

Deps

This action is completely safe! It refreshes the app components needed for Multilogin to work smoothly. No data will be lost during the process, so you're good to go! 😊

 

Avoid deleting the mlx folder, as this may result in a complete or partial data loss. 

 
  1. Disconnect the agent
  2. Go to the mlx folder:
    1. Windows: C:\Users\%username%\mlx
    2. macOS: /Users/%username%/mlx
    3. Linux: /home/%username%/mlx
  3. Delete the deps folder
  4. Connect the agent to get things rolling
  5. Start any profile – this will automatically kick off the components download process
Your browser does not support HTML5 video.

Sync system timezone

Timezone

If your system timezone isn’t syncing properly, just follow these steps to get it back on track:

Windows

  1. Disconnect the agent and log out of your Multilogin account
  2. Go to your Windows settings by clicking "Start" → “Settings”
  3. Choose the "Time & language" section → “Date & time”
  4. Enable the "Set time zone automatically" and “Set time automatically” settings, and click “Sync now”
 
 

macOS

  1. Disconnect the agent and log out of your Multilogin account
  2. Go to System Settings → “General”
  3. Choose the “Date & Time” section
  4. Enable the “Set time and date automatically” and “Set time zone automatically using your current location” settings
 
 

Can’t sync the date or time because the “Set time zone automatically” option is unavailable? Go to your location settings and turn on your original location to enable it. Once that’s done, the button will become active. 

Windows

  1. Go to your Windows settings by clicking “Start” → “Settings”
  2. Choose “Privacy & security” → “Location”
  3. Enable the options “Location services” and "Let apps access your location”Zight 2024-11-26 at 6.38.43 PM
 
 

macOS

  1. Go to “System settings” → “General”
  2. Choose the “Privacy & Security” section
  3.  Turn on the “Location services”
 
 

Nothing helps?

If you still can't launch a profile, send us your proxy details (IP or hostname, port, login, and password) and logs. We’ll investigate and provide the best solution for you!

Logs

  1. Recreate the issue or wait until the error message appears
  2. Archive the logs folder found in these locations:
    1. Windows: C:\Users\%username%\mlx
    2. macOS: /Users/%username%/mlx
    3. Linux: /home/%username%/mlx
  3. Email support at [email protected] with:
    1. A clear description of the issue
    2. The archived logs folder attached
Your browser does not support HTML5 video.

 

 

Was this article helpful?

Give feedback about this article

Multilogin community

Stay informed, share your thoughts, and engage with others!

Join us on Telegram

Read more on the topic

blogpost img

10 Best Datacenter Proxies for Web Scraping (2025 Edition)

Apr 2, 2025 5 min read
Google SERP Img

What is a Google SERP Proxy and Why Should You Care?

Apr 1, 2025 6 min read
UK Proxy Img

What Are Dedicated UK Proxies? Everything You Need to Know

Apr 1, 2025 6 min read
art-icon

Related Articles

  • How to fix profile launch or proxy connection issues
  • How to fix agent connection issues
  • How to fix startup issues in Multilogin

ANTIDETECT PLATFORM

  • Antidetect browser
  • Mobile antidetect browser
  • Headless browser
  • Multilogin residential proxies
  • Multi-account management
  • Web automation

RESOURCES

  • Knowledge base
  • API documentation
  • Glossary
  • Blog
  • Multilogin 6 download
  • Server status
  • Release notes

PLATFORM PROXIES

  • Google proxy
  • Facebook proxy
  • Reddit proxy
  • Twitter proxy
  • Amazon proxy
  • LinkedIn proxy

GEO PROXIES

  • Japan proxy
  • UK proxy
  • USA proxy
  • China proxy
  • Canada proxy
  • India proxy

MULTI-ACCOUNT MANAGEMENT

  • Create multiple Facebook accounts
  • Create multiple LinkedIn accounts
  • Create multiple Amazon accounts
  • Create multiple eBay accounts
  • Create multiple Gmail accounts
  • Create multiple Discord accounts

COMPARISON

  • Multilogin vs. Gologin
  • Multilogin vs. Adspower
  • Multilogin vs. Dolphin Anty
  • Multilogin vs. Incognition
  • Multilogin vs. Octo Browser

GET IN TOUCH

  • Contact 24/7 support
    [email protected]
  • Contact sales
  • Affiliate program
  • Careers

© 2025 Multilogin. All rights reserved.

  • Privacy policy
  • Terms of service
  • Cookie policy
  • ANTIDETECT PLATFORM

    • Antidetect browser
    • Mobile antidetect browser
    • Headless browser
    • Multilogin residential proxies
    • Multi-account management
    • Web automation
  • RESOURCES

    • Knowledge base
    • API documentation
    • Glossary
    • Blog
    • Multilogin 6 download
    • Server status
    • Release notes
  • MULTI-ACCOUNT MANAGEMENT

    • Create multiple Facebook accounts
    • Create multiple LinkedIn accounts
    • Create multiple Amazon accounts
    • Create multiple eBay accounts
    • Create multiple Gmail accounts
    • Create multiple Discord accounts
  • COMPARISON

    • Multilogin vs. Gologin
    • Multilogin vs. Adspower
    • Multilogin vs. Dolphin Anty
    • Multilogin vs. Incognition
    • Multilogin vs. Octo Browser
  • PLATFORM PROXIES

    • Google proxy
    • Facebook proxy
    • Reddit proxy
    • Twitter proxy
    • Amazon proxy
    • LinkedIn proxy
  • GEO PROXIES

    • Japan proxy
    • UK proxy
    • USA proxy
    • China proxy
    • Canada proxy
    • India proxy
  • GET IN TOUCH

    • 24/7 support: [email protected]
    • Contact sales
    • Affiliate program
    • Careers
  • Privacy policy
  • Terms of service
  • Cookie policy

© 2025 Multilogin. All rights reserved.

Expand