How to Fix ERR_CONNECTION_RESET Error: 5 Methods

Understanding ERR_CONNECTION_RESET

The ERR_CONNECTION_RESET error occurs when your connection to a website is unexpectedly interrupted. This can happen for several reasons:

• Network connectivity issues
• Firewall blocking
• Antivirus interference
• Browser cache problems
• TCP/IP stack corruption
• Server-side issues

Method 1: Reset Network Settings

Step-by-Step Network Reset

1. Flush DNS Cache

2. Release IP Address

3. Renew IP Address

4. Reset Winsock Catalog

5. Reset TCP/IP Stack

6. Restart Computer

• Save all work
• Perform a full system restart
• Test the connection again

Additional Network Troubleshooting

• Check physical connections
• Verify router functionality
• Test different networks if possible
• Try connecting via mobile hotspot

Method 2: Browser Troubleshooting

Clear Browser Data

1. Chrome
   • Press Ctrl + Shift + Delete
   • Select time range: “All time”
   • Check boxes for:
     • Browsing history
     • Cookies and site data
     • Cached images and files
   • Click “Clear data”
2. Firefox
   • Press Ctrl + Shift + Delete
   • Choose time range: “Everything”
   • Select all items
   • Click “Clear Now”
3. Edge
   • Press Ctrl + Shift + Delete
   • Select “All time”
   • Check all boxes
   • Click “Clear now”

Reset Browser Settings

1. Chrome
   • Settings > Advanced > Reset settings
   • Choose “Restore settings to original defaults”
   • Click “Reset settings”
2. Firefox
   • Help > Troubleshooting Information
   • Click “Refresh Firefox”
   • Confirm the reset
3. Edge
   • Settings > Reset settings
   • Choose “Restore settings to default values”
   • Click “Reset”

Method 3: Firewall and Antivirus Solutions

Check Windows Firewall

1. Access Windows Firewall
   • Open Control Panel
   • System and Security
   • Windows Defender Firewall
2. Temporarily Disable Firewall
   • Turn off Windows Defender Firewall
   • Test the connection
   • Re-enable if not resolved
3. Add Exceptions
   • Click “Allow an app through firewall”
   • Add your browser
   • Enable both private and public networks

Antivirus Troubleshooting

1. Temporarily Disable Antivirus
   • Locate antivirus in system tray
   • Disable real-time protection
   • Test the connection
   • Re-enable if not resolved
2. Update Antivirus
   • Check for updates
   • Install latest definitions
   • Restart antivirus service
3. Configure Exceptions
   • Add website to trusted sites
   • Whitelist browser application
   • Allow HTTPS traffic

Method 4: System-Level Fixes

Update Network Drivers

1. Access Device Manager
   • Right-click Start
   • Select “Device Manager”
   • Expand “Network adapters”
2. Update Driver
   • Right-click network adapter
   • Choose “Update driver”
   • Select “Search automatically”
3. Rollback if Needed
   • Right-click adapter
   • Properties
   • Driver tab
   • Choose “Roll Back Driver”

Modify Registry Settings

CAUTION: Back up registry before making changes

1. Access Registry Editor

2. Navigate to

3. Modify Values

• Create DWORD: “TcpMaxDataRetransmissions”
• Set value to 5
• Restart computer

Method 5: Advanced Solutions

Check Proxy Settings

1. Windows Settings
   • Settings > Network & Internet
   • Proxy settings
   • Disable “Automatically detect settings”
   • Clear manual proxy if not needed
2. Browser Proxy
   • Check browser proxy settings
   • Disable if not required
   • Use system proxy settings

MTU Size Adjustment

1. Check Current MTU

2. Set New MTU

SSL/TLS Configuration

1. Check SSL Settings
   • Internet Options
   • Advanced tab
   • Security section
   • Enable all TLS versions
2. Reset SSL State

Prevention Tips

Regular Maintenance

1. Keep systems updated
2. Regular browser cleanup
3. Monitor firewall logs
4. Update security software
5. Check network hardware

Network Health

1. Use reliable DNS servers
2. Monitor bandwidth usage
3. Regular speed tests
4. Check for interference
5. Maintain router firmware

Security Best Practices

1. Use updated browsers
2. Regular security scans
3. Monitor unusual activity
4. Keep firewall rules current
5. Document network changes

Troubleshooting Checklist

 

Tried basic network reset

Cleared browser data

Checked firewall settings

Verified antivirus

Updated network drivers

Checked proxy settings

Verified SSL/TLS

Tested different browsers

Checked other devices

Documented changes made

When to Seek Help

• Error persists across all solutions
• Multiple devices affected
• Network infrastructure issues
• Hardware problems suspected
• Security concerns identified

Note: Always backup important data and