The error "Windows could not automatically detect this network's proxy settings" indicates Windows is struggling to connect to the internet via a proxy server. This issue typically occurs on corporate or public networks using proxies, though it can appear on home networks too. To resolve it, check proxy settings manually, ensure automatic detection is enabled, or contact network administrators for correct configurations.

If you're seeing the error "Windows could not automatically detect this network's proxy settings," it usually means Windows is having trouble figuring out how to connect to the internet through a proxy server. This can happen on home networks, but it's more common in corporate or public networks that use proxies.

The good news is, this issue is often easy to fix — especially if it's not related to a larger network problem. Here’s what you can do.

Check if You’re Supposed to Use a Proxy

Some networks require a proxy server to access the internet. If your network uses one and Windows isn’t detecting it, you’ll get this message.

• In many workplaces or schools, IT sets up automatic proxy detection using a PAC file (Proxy Auto-Configuration).
• If you're at home and not sure whether you need a proxy, chances are you don't.

What to do:

• Ask someone who manages the network (like your office IT team) if a proxy is required.
• If you're at home, try manually disabling the automatic proxy setup:
  • Go to Settings > Network & Internet > Proxy
  • Under "Automatic proxy setup," turn off Automatically detect settings

Reset Network Settings or Flush Winsock/WinHTTP

Sometimes, Windows might just have some corrupted network configuration data. This doesn’t happen often, but when it does, resetting a few things can help.

Try these steps:

• Open Command Prompt as Administrator
• Run these commands one by one:

netsh winsock reset
netsh winhttp reset proxy

After running them, restart your computer.

This resets the internal networking components that handle proxy detection. It’s safe to run and doesn’t affect other settings like Wi-Fi passwords.

Manually Configure or Clear Proxy Settings

If you’ve messed with proxy settings before, there might be an incorrect configuration saved. Or maybe the system is trying to use a proxy that no longer exists.

To double-check:

• Go to Settings > Network & Internet > Proxy
• Scroll down to "Manual proxy setup"
• Make sure nothing is filled in unless you know you need it
• If you do need a proxy, enter the correct address and port number

Also, check if Use setup script is turned on and pointing to a valid PAC file — sometimes old scripts linger after being removed.

Temporarily Disable Antivirus or Firewall

Some third-party antivirus programs or firewalls interfere with how Windows detects proxy settings. This is less common than the above fixes, but worth testing.

What to do:

• Turn off your antivirus/firewall temporarily (don’t forget to turn it back on)
• Try reconnecting to the network or refreshing the internet options

If the error goes away, then you’ll want to add an exception or switch to a different security program.

That should cover most of the usual causes. The proxy error is usually not a big deal, but it can block internet access if left unresolved. Most people find success by either disabling auto-detection or resetting network components.

基本上就這些。

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