Windows could not automatically detect this network's proxy settings means the Windows troubleshooter could not confirm a usable automatic proxy configuration for the current network. It does not necessarily mean that you use a proxy, that a proxy provider is down, or even that the warning caused your connection problem.

If the internet works normally, avoid resetting the entire network just to clear the message. If pages do not load, first check whether this is a personal network with no intentional proxy, a managed work or school network, or a device that should use a manual proxy. The correct fix depends on that distinction.

For a personal connection that should be direct, the quickest safe check is Settings > Network & internet > Proxy: remove any unknown setup script or manual proxy, confirm the automatic setting, then reconnect. On a managed network, do not delete a script address or organization-supplied proxy; ask the administrator to verify it.

Windows Could Not Automatically Detect This Network's Proxy Settings: Quick Fix

Follow this order and stop when the connection works:

1. Test another website and another device on the same network.
2. Restart the PC, then restart the router if every device is affected.
3. Open Settings > Network & internet > Proxy.
4. On a personal network with no proxy, turn off Use setup script and Use a proxy server if either contains an unknown value.
5. Leave Automatically detect settings on for the standard automatic configuration Microsoft documents. If discovery itself appears to stall on a simple home network that has no proxy, test it off and reconnect.
6. Temporarily disconnect a VPN or third-party proxy app and test again.
7. Run the Windows network reset commands shown below.
8. Inspect WinHTTP separately, then use Network reset only as a last resort.

Microsoft documents automatic, script-based, and manual configuration as three separate options in Windows proxy settings. Do not combine modes unless your administrator or proxy provider explicitly requires it.

What the Proxy Detection Warning Actually Means

Windows can obtain a web proxy in three broad ways:

• Automatic detection: Windows looks for configuration advertised by the network.
• Setup script: Windows downloads rules from a proxy auto-configuration (PAC) URL.
• Manual proxy: Windows sends compatible web traffic to a specified host and port.

The warning appears after a diagnostic cannot validate the automatic route. A missing automatic configuration is normal on many home networks because they connect directly. The message matters when it appears with symptoms such as browsers failing, Microsoft services losing connectivity, or an expected work proxy no longer loading.

It also helps to separate three proxy layers:

One layer can be wrong while the others work. For example, a browser extension can route traffic even when WinHTTP reports direct access, and a stale WinHTTP proxy can affect a background service while ordinary browsing still works.

Common Causes

A stale manual proxy or setup script

A VPN, debugging tool, malware, company configuration, or old proxy client may leave a proxy host or PAC URL behind. When that endpoint is unavailable, compatible apps can lose web access even though Wi-Fi remains connected.

Do not assume an unfamiliar value is malicious on a work or school device. It may be required policy. Record the current settings before changing them and contact IT if the device is managed.

Automatic discovery cannot complete

Automatic proxy discovery depends on the network and its configuration. A home network may not advertise a proxy because it does not need one. On an organization network, incorrect DNS, DHCP, PAC hosting, or policy can prevent Windows from finding the intended configuration.

VPN or security software conflicts

VPN clients, traffic filters, antivirus web shields, and proxy-routing tools can install adapters or change connection settings. A client that did not exit cleanly can leave an unavailable route behind. Disconnecting it for one controlled test helps identify the layer, but do not permanently disable required security software.

The IP or DNS stack is unhealthy

The diagnostic names proxy detection, but the underlying problem may be broader. A bad DHCP lease, Winsock catalog problem, TCP/IP configuration, or stale DNS cache can stop the discovery request and ordinary browsing at the same time.

The network adapter or driver is damaged

If the failure started after a Windows update, driver update, VPN installation, or virtual networking change, the physical or virtual adapter may be the source. This is more likely when both direct and proxied connections fail.

The intentional proxy is misconfigured

If you meant to use a proxy, check the host, port, protocol, credentials, allowlisted source IP, and subscription status. Windows' manual web proxy setting is not a general SOCKS5 client. For SOCKS routing, follow the Windows 11 SOCKS5 proxy guide instead.

Fix 1: Identify Whether the Problem Is the PC or Network

Before changing proxy settings, make four quick tests:

1. Open two unrelated HTTPS websites.
2. Try another browser on the same PC.
3. Connect another device to the same Wi-Fi or Ethernet network.
4. If possible, connect the affected PC to a phone hotspot or another trusted network.

The pattern narrows the cause:

Restart the PC before deeper changes. If all devices fail, restart the modem and router according to the manufacturer's instructions and wait for them to reconnect fully.

Fix 2: Correct the Windows Proxy Modes

Open Settings > Network & internet > Proxy. Then use the case that matches your network.

Personal network with no intentional proxy

• Remove an unknown value under Use setup script, then turn that mode off.
• Remove an unknown manual host and port, then turn Use a proxy server off.
• Keep Automatically detect settings on initially.
• Disconnect and reconnect the network, then test again.

If Windows continues to pause while detecting a proxy on a basic home network, turn automatic detection off for one test. Direct internet should not require a PAC file or manual proxy. Turn it back on before joining a network that supplies configuration automatically.

Work or school network

Do not guess the PAC URL, proxy host, bypass list, or authentication method. Capture a screenshot with secrets hidden and ask IT whether the network uses automatic detection, a setup script, or a manual endpoint. Test on and off the organization network only if policy allows it.

Device that intentionally uses a proxy

Re-enter only the values supplied by the provider or administrator:

• Proxy hostname or IP address.
• Port.
• HTTP-compatible protocol for the Windows manual proxy field.
• Bypass list, if required for local or internal addresses.
• Credentials when the client prompts for them.

If you are setting up a provider endpoint rather than repairing detection, the broader proxy server setup guide explains formats, authentication, and route testing. A repeated credential prompt is a different issue; use the 407 Proxy Authentication Required guide.

Fix 3: Remove VPN and App-Level Conflicts

Quit any VPN, proxy extension, local debugging proxy, traffic-capture app, or routing client, then retest one browser. Check Task Manager if the client still runs in the background.

If the connection starts working, reopen one tool at a time. Update or repair the client that recreates the failure. Also check whether the VPN connection has its own proxy: Microsoft notes that a VPN proxy is configured separately from the normal Windows proxy screen.

On a managed PC, coordinate this test with IT. Endpoint security filters may be mandatory and may need an administrator repair rather than removal.

Fix 4: Reset the Network Stack

Microsoft recommends a sequence of network commands to reset Winsock and TCP/IP, renew the IP address, and clear the DNS resolver cache. Open Command Prompt as administrator and run:

netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns

Restart the PC after the commands finish. The release and renew steps can briefly disconnect the device, so do not run them during an important upload or remote session. Microsoft's Windows Ethernet troubleshooting guide documents the same sequence for connection failures.

These commands repair general networking state; they do not validate a PAC URL or fix bad proxy credentials. If only the intended proxy still fails, return to its endpoint and authentication details.

Fix 5: Inspect and Reset WinHTTP Carefully

Windows Settings and WinHTTP are not interchangeable. Open an elevated Command Prompt and inspect the WinHTTP proxy:

netsh winhttp show proxy

If it shows Direct access (no proxy server), WinHTTP is already direct. If it shows an unexpected proxy on a personal, unmanaged PC, record the output and reset WinHTTP to direct access:

netsh winhttp reset proxy

Microsoft's netsh winhttp reference states that reset proxy changes the WinHTTP proxy to direct access. Do not run it on a managed device or a network that requires WinHTTP proxying without administrator approval. It can break Windows services or organization applications that depend on that route.

Fix 6: Repair the Adapter, Then Use Network Reset Last

Check Settings > Network & internet > Advanced network settings and disable, then re-enable, the active Wi-Fi or Ethernet adapter. If the problem began after a driver change, open Device Manager > Network adapters, identify the correct adapter, and check the PC manufacturer's current driver guidance.

Use Settings > Network & internet > Advanced network settings > Network reset only after the earlier steps fail. Windows removes and reinstalls network adapters and restores their settings to defaults after restart. You may need to reinstall VPN clients, virtual switches, or other networking software afterward, which is why Microsoft describes Network reset as a last step.

Before selecting Reset now, save:

• Required proxy or PAC details.
• VPN configuration and installers.
• Static IP, DNS, or VLAN settings.
• Wi-Fi credentials you may need after restart.
• Virtual switch or virtual machine networking details.

When the Warning Is About an Intentional Proxy

The Windows message does not test every property of a paid or private proxy. Verify the endpoint outside the affected app when possible:

1. Confirm the provider shows the endpoint as active.
2. Check that the host resolves and the port is correct.
3. Match HTTP or SOCKS5 to a compatible client.
4. Confirm username/password or source-IP allowlisting.
5. Test one endpoint against a simple IP-check service.
6. Compare the direct and proxied result.

If the proxy works in another client, Windows automatic detection is probably not the required setup method. Configure the endpoint in the app that needs it or use the correct manual Windows mode. If no client can reach the proxy, contact the provider with the timestamp, endpoint hostname, port, protocol, and sanitized error—never send the password in a screenshot or public ticket.

FAQ

Why does Windows say it cannot detect proxy settings when I do not use a proxy?

The troubleshooter attempted automatic discovery but did not confirm a configuration. Many personal networks use direct internet and do not advertise a proxy. If the connection works, the message alone does not justify a full network reset.

Should Automatically detect settings be on or off?

Microsoft's standard automatic setup instructions say to turn it on. That is appropriate when the network supplies proxy configuration. On a simple home network with no proxy, direct access may also work with it off. Use the setting required by the network rather than treating one position as universal.

Will netsh winhttp reset proxy remove every proxy?

No. It resets the WinHTTP proxy to direct access. It does not necessarily remove a browser extension, an app-specific proxy, a VPN route, or every value shown in Windows user proxy settings.

Is this error caused by a proxy provider?

Not usually. It is a Windows network diagnostic result. If you intentionally use a provider, test the endpoint and credentials separately. If direct access also fails, troubleshoot the PC or network first.

Does Network reset delete VPN settings?

Network reset removes and reinstalls network adapters and returns their settings to defaults. Microsoft warns that VPN clients and virtual switches may need to be reinstalled or reconfigured afterward, so save what you need before using it.

Conclusion

When Windows could not automatically detect this network's proxy settings, first decide whether the network should be direct, automatically configured, or intentionally proxied. Correct the Windows proxy mode, isolate VPN and app-level conflicts, repair the network stack, and inspect WinHTTP before resetting every adapter.

If the internet already works, avoid destructive fixes for a diagnostic warning alone. If an intentional proxy is the only failing path, verify its protocol, endpoint, and authentication in a controlled client instead of repeatedly resetting Windows.