Network · high

How to fixWINSOCK-CORRUPT

Corrupted Winsock catalog

What this error means

WINSOCK-CORRUPT shows up as a high-severity network adapter fault. The Internet connection works on the router, but Windows cannot establish any TCP/IP connections. Common triggers are faulty uninstall of VPN software (Cisco AnyConnect, Avast SecureLine), malware damaging the network stack and aborted network driver update. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Reset Winsock using the command: netsh winsock reset

Reset Winsock using the command: netsh winsock reset.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Reset the TCP/IP stack: netsh int ip reset

Reset the TCP/IP stack: netsh int ip reset.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Restart your computer

Restart your computer.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Faulty uninstall of VPN software (Cisco AnyConnect, Avast SecureLine)
  • Malware damaging the network stack
  • Aborted network driver update