Event ID 4202 — TCP/IP Network Interface Configuration
Event Details
| Product: | Microsoft Windows Operating System |
| Event ID: | 4202 |
| Source: | TCP/IP |
| Version: | Windows Server 2008 R2, Windows Server 2008 |
| Level: | Warning |
| Message: | The system detected that network adapter %2 was disconnected from the network and its network configuration has been released. If the network adapter was not disconnected, this may indicate that it has malfunctioned. Try updating the network adapter's drivers. |
Summary
This topic describes how to troubleshoot issues with a disconnected or malfunctioning network adapter when the TCP/IP protocol was not properly installed.
Causes
- The TCP/IP protocol is not properly installed on the network interface. As a result, the network adapter either is disconnected from the network, and its configuration has been released, or the network adapter is malfunctioning.
- If ISATAP is enabled on a Windows Server 2008 R2 Server Core installation after upgrading to Window Server 2008 SP1, you might see the following event message: “Unable to update the IP address on ISATAP interface.” This error will be written to the log once after upgrading, but will not disrupt proper function of ISATAP or the server. You can safely ignore this event message.
Resolutions
If the TCP/IP protocol is not properly installed, take these steps to resolve the problem:
- Remove the TCP/IP protocol from the network interface, and add it again.
- If the problem persists, reset the Winsock catalog.
To remove the protocol from the network interface and add it again:
- Click Control Panel, double-click Network and Sharing Center, and then click Manage network connections.
- Right-click the network interface you want to repair, right-click Properties, clear the Internet Protocol Version 4 (TCP/IPv4) check box, and then click OK.
- Right-click the same network interface, click Properties, select the Internet Protocol Version 4 (TCP/IPv4) check box, and then click OK.
If the problem persists, reset the Winsock catalog:
- Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
- Click Continue when prompted by User Account Control, and then provide the administrator password, if requested.
- At the command prompt, type netsh winsock reset, and then press ENTER.
The output of the netsh winsock reset command should indicate a successful reset. - Restart the computer to complete the reset of the Winsock catalog.