How to fix “The requested protocol has not been configured into the system or no implementation for it exists. [WSAEPROTONOSUPPORT (0x273B)]” – Error Code 10043


lightbulb

Error Code 10043

Error code Error Code 10043 is a common Windows issue that typically arises from “The requested protocol has not been configured into the system or no implementation for it exists. [WSAEPROTONOSUPPORT (0x273B)]”.

Overview

This article focuses on resolving the “The requested protocol has not been configured into the system or no implementation for it exists. [WSAEPROTONOSUPPORT (0x273B)]” error, identified by the error code 10043. We’ll explore its causes, symptoms, and provide effective solutions to fix it.

Identifying the Problem

Error Code 10043 occurs when an application attempts to use a network protocol that is not supported or configured properly on the system. Common scenarios include:

  • Using unsupported protocols in networking applications
  • Firewall or antivirus software blocking protocol access
  • Corrupted system files or network settings

Common Fixes

1. Check Network Protocol Settings:

  • Open Control Panel > Network and Internet > Network Connections
  • Right-click on the active network connection and select Properties
  • Verify that the necessary network protocol (e.g., TCP/IPv4 or IPv6) is enabled and configured correctly

2. Disable Firewall or Antivirus Software:

  • Temporarily disable the firewall or antivirus software to check if it’s blocking the protocol
  • If the error persists, the software may not be the cause

3. Reset Network Settings:

  • Open Command Prompt as administrator
  • Type “netsh winsock reset” and press Enter
  • Restart the computer to complete the reset

4. Update Network Drivers:

  • Open Device Manager
  • Expand Network Adapters and right-click on the active network adapter
  • Select Update Driver and follow the on-screen instructions

Advanced Troubleshooting

1. Use Registry Editor:

  • Open Registry Editor (regedit)
  • Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinSock2
  • In the right pane, right-click on ProtocolCatalogFlags and select Modify
  • Set the value data to 0 and click OK

2. Check for Corrupted System Files:

  • Open Command Prompt as administrator
  • Type “sfc /scannow” and press Enter
  • If corrupted files are found, they will be repaired

3. Reinstall Network Protocol:

  • Open Control Panel > Network and Internet > Network Connections
  • Right-click on the active network connection and select Properties
  • Click on the “Install” button and follow the on-screen instructions to reinstall the network protocol

Conclusion

By following these solutions, you should be able to fix Error Code 10043 and restore network functionality on your system. To prevent future occurrences, ensure your network protocols are configured correctly, update drivers regularly, and keep your firewall or antivirus software updated. If the problem persists, consult with a qualified IT professional for further assistance.