


How to fix the 'Windows could not automatically detect this network's proxy settings' error?
Oct 16, 2025 pm 02:11 PMIf you get the "Windows could not automatically detect proxy settings" error, try these steps: 1. Disable automatic proxy detection. 2. Set up proxy manually. 3. Reset WinHTTP proxy. 4. Clear DNS cache. 5. Check Group Policy. 6. Update network drivers.
If you encounter the "Windows could not automatically detect this network's proxy settings" error, it usually indicates a problem with your system's connection to automatic proxy configuration scripts. Here are several methods to resolve this issue:
The operating environment of this tutorial: Dell XPS 13, Windows 11
1. Disable Automatic Proxy Detection Temporarily
This method helps determine if the error stems from failed attempts to fetch proxy settings from a PAC (Proxy Auto-Configuration) file. Disabling automatic detection bypasses the faulty lookup process.
- Press Windows I to open Settings.
- Navigate to Network & Internet > Proxy.
- Under the "Automatic proxy setup" section, toggle off Automatically detect settings.
2. Use a Manual Proxy Configuration
If your network requires a proxy, manually entering the correct details can resolve connectivity issues caused by failed auto-detection.
- Go to Settings > Network & Internet > Proxy.
- Scroll down to the "Manual proxy setup" section and turn on Use a proxy server.
- Enter the correct IP address and port number provided by your network administrator.
- Click Save after inputting the details.
3. Reset WinHTTP Proxy Settings
Corrupted WinHTTP proxy configurations can interfere with automatic detection. Resetting them to default ensures no incorrect global proxy rules are enforced at the system level.
- Open Command Prompt as Administrator. Search for cmd, right-click, and select Run as administrator.
- Type the following command and press Enter: netsh winhttp reset proxy.
- Restart your computer to apply the changes.
4. Clear and Re-register DNS Cache
DNS misconfigurations may prevent access to proxy auto-configuration URLs. Refreshing the DNS resolver cache can restore proper name resolution required for proxy detection.
- Launch Command Prompt as Administrator.
- Run the command: ipconfig /flushdns.
- Then execute: ipconfig /registerdns.
- Close the window and reboot your machine.
5. Check Group Policy Settings (For Pro and Enterprise Editions)
Group Policy overrides can enforce proxy settings that conflict with network conditions. Verifying or resetting these policies ensures alignment with current network requirements.
- Press Windows R, type gpedit.msc, and press Enter.
- Navigate to Computer Configuration > Administrative Templates > System > Internet Communication Management > Internet Communication settings.
- Double-click Turn off automatic detection of proxies.
- Set it to Disabled or Not Configured, then click OK.
6. Update Network Adapter Drivers
Outdated or corrupted network drivers may fail to handle proxy auto-discovery protocols like WPAD correctly. Updating ensures compatibility and fixes known bugs.
- Right-click the Start button and select Device Manager.
- Expand Network adapters.
- Right-click your active network adapter and choose Update driver.
- Select Search automatically for updated driver software and follow the prompts.
The above is the detailed content of How to fix the 'Windows could not automatically detect this network's proxy settings' error?. For more information, please follow other related articles on the PHP Chinese website!

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