ERR_PROXY_CONNECTION_FAILED: Proxy Unreachable Fix

“ERR_PROXY_CONNECTION_FAILED� means your browser tried to route traffic through a proxy server that it couldn’t reach, so the connection was aborted. The fix is to either correct the proxy address, disable the proxy if you don’t need one, or clear the corrupted proxy settings. This error appears in Chrome and other Chromium-based browsers, and it’s almost always a local configuration problem rather than a fault with the website you’re visiting.

What Causes This Error

Your browser doesn’t connect to the internet directly by default. It uses system network settings, which may include a proxy server. A proxy acts as an intermediary: your browser sends requests to the proxy, and the proxy forwards them to the website. When the proxy address is wrong, the server is down, or the settings are corrupted, the browser can’t establish that middle step and shows ERR_PROXY_CONNECTION_FAILED.

Common triggers include:

• Leftover proxy settings from a VPN, ad-blocker, or privacy extension that was uninstalled improperly.
• A manually configured proxy IP or port that is no longer valid.
• Malware or a browser hijacker that changed your proxy settings.
• Windows or macOS “automatic proxyâ€� settings pointing to a script (PAC file) that no longer exists.
• A corporate or school proxy that requires authentication or is temporarily offline.

In most cases, the proxy was never needed in the first place—it’s just a stale setting.

How to Fix It in Windows

If you’re on Windows 10 or 11, the quickest fix is to turn off the proxy entirely and see if the error disappears.

1. Open Settings (Win + I) and go to Network & Internet.
2. Select Proxy from the left menu.
3. Under Manual proxy setup, toggle Use a proxy server to Off.
4. Under Automatic proxy setup, toggle Automatically detect settings to On (this is the default and usually harmless).
5. If there’s a script address in the “Use setup script� field, turn that off too, unless you know you need it.
6. Restart your browser and test the connection.

If the error persists, open Internet Options (type “Internet Options� in the Start menu), go to the Connections tab, click LAN settings, and uncheck Use a proxy server for your LAN. Also make sure Automatically detect settings is checked. Click OK on both windows.

How to Fix It on macOS

On a Mac, the proxy settings live in the network preferences.

1. Open System Settings (or System Preferences on older macOS) and go to Network.
2. Select your active connection (Wi-Fi or Ethernet) and click Details.
3. Click Proxies in the left sidebar.
4. Uncheck every proxy option that is enabled: Web Proxy (HTTP), Secure Web Proxy (HTTPS), FTP Proxy, SOCKS Proxy, and “Automatic Proxy Configuration.�
5. Click OK and then Apply.

If you’re on a corporate network and need a proxy, you’ll need the correct address and port from your IT department. Without it, you’ll just have to guess, which is rarely productive.

Reset Chrome’s Proxy Settings

Chrome uses the system proxy settings, but it also has its own flags and extensions that can override them. To reset Chrome’s network behavior:

1. Type chrome://settings in the address bar and press Enter.
2. Scroll to the bottom and click Advanced.
3. Under System, click Open your computer’s proxy settings. This takes you to the same Windows or macOS settings described above.
4. Go back to Chrome and type chrome://flags. Press Ctrl+F (or Cmd+F) and search for “proxy.â€� Reset any flag that is set to Enabled back to Default.
5. Disable any proxy-management extensions (like Hola, ZenMate, or similar) by going to chrome://extensions and toggling them off.

If you still see the error, try clearing your browser cache and cookies. Corrupted cached data can sometimes cause the browser to hold onto dead proxy connections.

When the Proxy Is Actually Needed

If you’re at work, school, or using a service that requires a proxy (like a VPN or a web filter), turning it off isn’t the solution. In that case, the error usually means the proxy server itself is down or the address has changed. Contact your network administrator and ask for the correct proxy IP and port. They may also need to update the automatic configuration script (PAC file) URL.

For personal use, if you’re using a VPN, the VPN software usually manages the proxy. Try disconnecting and reconnecting the VPN, or reinstalling it. If you’re using a free proxy from a list you found online, stop. Free proxies are unreliable, slow, and often a security risk. Use a reputable paid VPN instead, or just connect directly.

Malware and Browser Hijackers

Sometimes the proxy settings are changed by malware without your knowledge. If you’ve disabled the proxy and the error comes back after a restart, you may have adware or a browser hijacker. Run a full system scan with Windows Defender (or your preferred antivirus) and also check your browser’s shortcuts for suspicious additions like “http://proxy.something� in the target field.

To check the shortcut: right-click the Chrome icon on your desktop or taskbar, select Properties, and look at the Target field. It should end with chrome.exe and nothing else. If there’s a URL after it, remove it and click OK.

Frequently Asked Questions

Why does this error only happen in Chrome?

Chrome and other Chromium browsers (Edge, Brave, Opera) use the system proxy settings, but they also have their own network stack. Firefox uses its own proxy settings, so it may work fine even when Chrome fails. If Firefox works, the problem is almost certainly a Chrome-specific setting or extension.

Will clearing my DNS cache help?

No, DNS cache is unrelated to proxy errors. The proxy error happens before DNS resolution. However, if you’re also seeing DNS errors, you can flush it with ipconfig /flushdns in Command Prompt, but it won’t fix ERR_PROXY_CONNECTION_FAILED.

Can a VPN cause this error?

Yes. VPN software often installs a virtual network adapter and may set a proxy. If the VPN is not running properly or was uninstalled incorrectly, the proxy settings can remain and point to a dead address. Reinstalling the VPN or manually clearing the proxy settings usually fixes it.

Is it safe to use a free proxy to bypass this error?

No. Free proxies are often run by unknown parties who can see your traffic. They may inject ads, steal login credentials, or sell your data. If you need to hide your IP, use a reputable paid VPN with a no-logs policy. For most users, the best fix is to disable the proxy entirely.

What if the error appears on my phone?

On Android or iOS, the proxy settings are usually in the Wi-Fi network settings. Go to your Wi-Fi settings, tap the connected network, and look for “Proxy� or “HTTP Proxy.� Set it to “None� and reconnect. If you’re using a VPN app, disconnect it and reconnect.

Does this error mean my computer is infected?

Not necessarily. It’s often just a leftover setting. But if the proxy keeps coming back after you disable it, or if you see other strange behavior like pop-ups or a changed homepage, it’s worth running a malware scan.

Related

• Creative Uses for Old Mac Computers
• Action RPGs vs Turn-Based RPGs: Which Is Right for You?
• Restore 0 Byte Files? Fixes That Work