Windows 11

ERR_PROXY_CONNECTION_FAILED in Windows : Fixed

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The ERR_PROXY_CONNECTION_FAILED error in Windows 11 indicates your computer cannot connect to the internet through its configured proxy server. It’s not a fatal error and won’t harm your computer, but will block website access.

It may occur because of incorrect proxy settings, proxy server issues, interference from firewall or antivirus, or general internet connectivity problems. This error can appear in any web browser in Windows. We suggest you do a simple restart to clear out temporary connection issues.

1. Use the Command Prompt

Use the Command Prompt for powerful, targeted solutions to the ERR_PROXY_CONNECTION_FAILED error in Windows 11. Gain nuanced control and troubleshooting like a pro, efficiently reclaiming online access. No downloads are required.

The following steps guide you on how to complete this action:

  1. Hold the Windows + S keys simultaneously, enter the command keyword in the search field while holding the CTRL and Shift keys down, and hit ENTER to start the Command Prompt as an admin.
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  2. When you receive a prompt, click Yes.
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  3. Once the Command Prompt opens, enter the following command and hit Enter:
    ipconfig /flushdns
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  4. Then, enter the command below and hit the Enter again:
    nbtstat –r
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  5. After that, enter the following commands into the console and hit Enter after each:
    netsh int ip reset
    netsh winsock reset
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  6. Finally, type Exit into the console and hit Enter to close the Command Prompt.

2. Reset the Browser Settings

Resetting browser settings can help to fix the ERR_PROXY_CONNECTION_FAILED error in Windows 11 by clearing the browsing history and cookies. The following steps will guide you through this solution:

  1. Launch your browser app (Google Chrome in our case), click the ellipses, and select Settings.
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  2. Then, click Reset settings on the left of the screen and click Restore settings to their original defaults.
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  3. When the pop-up appears, click the Reset settings button to confirm.
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3. Disable the Proxy Server

Disabling it bypasses a potentially faulty connection or messy configuration, freeing your computer to access the internet directly. This solution simplifies the connection path and potentially resolving the issue. Here is how to do it:

  1. Press the Windows + I keys simultaneously to open Settings, select Network & Internet, and click Proxy on the right pane.
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  2. Then, click Set up close to the Use a proxy server option under Manual proxy setup.
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  3. When the Edit proxy server dialog opens, toggle the Use a proxy server switch Off and click on Save.
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4. Perform a Network Reset

Network reset rewires your internet connection, clears corrupted settings, refreshes adapters, and reallocates addresses. It’s a potent fix for the proxy error, but be warned, it wipes out saved Wi-Fis and preferences. Backup passwords, check with IT if you’re on a managed network, and try simpler solutions first.

Use the following steps to complete the solution:

  1. Press the Windows and I keys to open the Settings menu.
  2. Then, select the Network & internet tab on the left pane.
  3. After that, click on the Advanced network settings option.
  4. Under More settings, click on the Network reset option.
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  5. Then, click the Reset now button next to Network reset and select the Yes response in the confirmation window when it comes up.
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  6. Finally, restart your PC.

5. Perform Malware Scan

Scanning for malware or viruses can help fix the ERR_PROXY_CONNECTION_FAILED in Windows 11 if malware infections are the cause. During the scan, your antivirus software will look for malicious files or programs and attempt to remove them. You may use any trusted antivirus of your choice.

Here is how to perform a malware scan with Windows Security:

  1. In the search box, search for Windows Security.
  2. Click on the relevant search result to open the application.
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  3. Now click Virus & threat protection.
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  4. Next, click on the Scan options to view all available scans.
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  5. Choose the Full scan option and click the Scan now button to do a deep scan on your PC for viruses or malware.
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6. Adjust Registry Settings

Tuning the registry can fix the proxy error by disabling the proxy or resetting Winsock, but proceed cautiously! This delicate technique requires careful implementation; a wrong step can crash your system. Ensure you have a backup first before you proceed.

  1. Press the Windows + R keys simultaneously to start the Run dialog, type regedit in the text field, and click OK.
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  2. Navigate to the following path: Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
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  3. Afterward, find Proxy Enable and Proxy Server values, right-click the value and select Delete.
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7. Uninstall the Network Adapter

  1. Open the Run dialog by pressing the Windows + R keys together, enter devmgmt.msc, and hit Enter.
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  2. Find the Network adapters, expand it, right-click the intended adapter, then click Uninstall device.
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  3. Then, click Action at the top of the screen, click Scan for hardware changes, and follow the instructions to reinstall the driver.
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8. Disable Proxy LAN Settings

Disabling Proxy LAN settings can fix the ERR_PROXY_CONNECTION_FAILED error in Windows 11 by bypassing a faulty server or messy configuration, connecting directly to the internet. See the steps below for guidance:

  1. Press the Windows + R keys simultaneously to open the Run box, type inetcpl.cpl, and hit Enter.
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  2. When the Internet Options window starts, open the Connection tab and click LAN settings.
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  3. Then, uncheck the Use a proxy server for your LAN box in the Proxy server section and click OK to save the change.
    ERR_PROXY_CONNECTION_FAILED windows 11
  4. Finally, click OK in the Internet Properties window and close the window.

While the ERR_PROXY_CONNECTION_FAILED error might feel like a daunting roadblock, it’s ultimately a temporary delay in your internet access in Windows 11. Understanding its causes and implementing the outlined troubleshooting steps can tame this problem and reclaim your online access.

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Richard Omachona
Richard is a techie in providing fixes and solutions for computer issues of various kinds. Among his contemporaries, he is a preferred choice. His experiences are vast in Windows operating systems, and several other skills in programming such as Python, Web Frontend designing implementing at industry standards, best practices in HTML, CSS and JavaScript. and basics in Web Backend. He also loves traveling, gaming and music.