Fixing Error 598: Network and DNS Reset in 10 Minutes

What Error 598 Means

Diagram of a network connection break between a client device and a remote server

Error 598 signals a connection break between your device and a remote server. The application or browser cannot send the request due to a routing failure or local blocking. The code is usually accompanied by messages like Network Error 598: Connection Lost or Ошибка сетевого подключения 598. The issue is common in download managers, game clients, and enterprise software.

Causes of Error 598

Error 598 most often occurs on the client side. Here are the main triggers:

• Router NAT table sticking. A long session or a sudden load spike disrupts packet distribution.
• Outdated DNS cache. The system queries an outdated IP address, breaking the connection.
• Proxy or VPN conflict. Multiple network tunnels intercept traffic simultaneously, causing a disconnect.
• Firewall blocking. Antivirus or firewall software marks a legitimate request as a threat.
• Network stack corruption. A failure in TCP/IP drivers or the registry after updates or a sudden power loss.

How to Fix Error 598

Fixing error 598 requires a systematic check of network settings. Perform the steps in order, moving to the next one only if the problem persists.

Method 1: Reboot Network Hardware

This method clears temporary routing glitches and refreshes the IP address.

1. Unplug the router and modem from power.
2. Unplug the network cable from your PC or disable Wi-Fi.
3. Wait 30 seconds for sessions to fully reset.
4. Plug the hardware back in and wait for the indicator lights to stabilize.
5. Reconnect to the network and test the application.

💡 Tip: If using Wi-Fi, temporarily connect via an Ethernet cable. A wired connection eliminates radio interference and helps localize the problem.

Method 2: Disable Proxy and VPN

Third-party network layers often trigger error 598.

1. Open Settings → Network & Internet → Proxy.
2. Toggle off Use a proxy server.
3. Close VPN applications from the system tray and stop their services via Task Manager.
4. In your browser, go to network settings and select Automatically detect settings.
5. Restart the application that experienced the failure.

⚠️ Important: Corporate or educational networks may require a mandatory proxy. In this case, clarify the settings with your system administrator.

Method 3: Reset Network Stack and Flush DNS

If the previous steps didn't help, revert your system's network settings to their defaults. This method resolves up to 90% of error 598 cases in Windows.

1. Press Win + S, type cmd, right-click Command Prompt, and select Run as administrator.
2. Run the commands one by one, pressing Enter after each:

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

3. Close the terminal and fully restart your computer.
4. After booting, check the connection. The error should be gone.

Preventing Connection Failures

To prevent error 598 from reappearing, follow these simple rules:

• Update your router's firmware via its web interface. Patches fix vulnerabilities and optimize packet handling.
• Set public DNS servers 8.8.8.8 and 1.1.1.1 in your adapter settings. They are more stable than ISP-provided ones.
• Don't run two VPN clients simultaneously and don't layer proxies over an active tunnel.
• Configure automatic driver updates for your network adapter via Device Manager.