How to Fix "DNS PROBE FINISHED BAD CONFIG" Error

The DNS PROBE FINISHED BAD CONFIG error is a common issue that indicates DNS configuration problems on your device or network. Thankfully, there are several straightforward ways to fix this error. Let’s go through the main methods to resolve it.

1. Restart Your Router

Sometimes connection issues stem from temporary router malfunctions. Try unplugging the router from its power source for about 10–15 seconds, then plug it back in. After it restarts, check to see if the error persists.

2. Clear DNS Cache

A cluttered DNS cache can lead to connection issues. To clear it, follow these steps:

  • Open Command Prompt as an administrator (type cmd in the Windows search bar and select "Run as Administrator").
  • Enter the command ipconfig /flushdns and press Enter.
  • Once the cache is successfully cleared, restart your browser and test the internet connection.

3. Change DNS Servers

By default, your device uses DNS servers provided by your Internet Service Provider (ISP), which may be unstable. Try switching to more reliable DNS servers like Google DNS or Cloudflare:

  • Go to your Network Settings (in Windows, you can do this through Control Panel > Network and Sharing Center).
  • Locate your network, right-click, and select Properties.
  • Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties.
  • Select “Use the following DNS server addresses” and enter:
    8.8.8.8 and 8.8.4.4 for Google DNS or 1.1.1.1 and 1.0.0.1 for Cloudflare.
  • Click “OK” and restart your computer.

4. Update Network Adapter Drivers

Outdated or corrupted network drivers can also cause DNS issues. You can update them via the Device Manager:

  • Press Win + X and select Device Manager.
  • Find Network Adapters, right-click on your network card, and choose Update Driver.
  • Follow the prompts to update the drivers, then restart your device.

5. Reset Network Settings

If previous steps haven’t worked, you may need to fully reset your network settings:

  • Open Command Prompt as an administrator.
  • Enter the following commands one by one, pressing Enter after each:
    • netsh int ip reset
    • netsh winsock reset
  • Restart your computer after completing the commands.