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. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Reset Winsock using the command: netsh winsock reset
  1. Reset Winsock using the command: netsh winsock reset
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Reset the TCP/IP stack: netsh int ip reset
  1. Reset the TCP/IP stack: netsh int ip reset
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Restart your computer
  1. Restart your computer
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

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