Microsoft Windows Error Code 0xC000020A: How to Fix It

Easy 15-30 minutes Medium Severity Verified June 2026
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Error Code
0xC000020A
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-30 minutes
Error code 0xC000020A (STATUS_ADDRESS_ALREADY_EXISTS) means that the IP address or network resource your computer is trying to use is already taken by another device on your network. This often happens due to a duplicate IP address assignment or a corrupted network configuration. Below are straightforward steps to resolve the conflict and get back online.
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Tools You'll Need

How to Fix Error Code 0xC000020A

  1. Restart Your Router and Computer

  2. Release and Renew Your IP Address

  3. Check for Duplicate IP Addresses

  4. Reset TCP/IP Stack and Winsock

  5. Set a Static IP Address (If DHCP Fails)

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When to Call a Professional

If steps 1-5 do not resolve the error, the issue may lie with your router configuration or a hardware fault in your network adapter. Contact your internet service provider or a network technician to diagnose router DHCP settings or replace faulty equipment.

Frequently Asked Questions

What does error 0xC000020A mean?
It means a network address (usually IP) your computer is trying to use is already in use by another device, causing a conflict.
Can a VPN cause error 0xC000020A?
Yes, VPN software can sometimes create IP address conflicts, especially if it modifies your network adapter settings. Try disabling the VPN temporarily to see if the error goes away.
Is error 0xC000020A harmful?
No, it is a network conflict error and does not harm your hardware. However, it prevents you from accessing the network until resolved.
Will resetting my router fix the error?
Often yes, because it clears the router's DHCP lease table. A full restart (power cycle) is recommended.
How do I permanently prevent this error?
Set up DHCP reservations on your router so each device always gets the same IP, or assign static IPs that don't conflict.

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