Software⏱️ 4 min read📅 2026-06-15

How to Fix: Creating network bridge sometimes (but not always) fails with error "an unexpected error occurred while configuring the network bridge"

Windows network bridge configuration issue with Intel I210 NICs, error message: 'an unexpected error occurred while configuring the network bridge'

Quick Answer: Try disabling and re-enabling the network adapter before attempting to create a bridge.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

The error 'an unexpected error occurred while configuring the network bridge' affects users attempting to manually create a network bridge on Windows 10 LTSC 2019 with Intel I210 NICs. This issue can be frustrating, especially when trying to set up identical systems. The goal of this troubleshooting guide is to help resolve this problem and provide alternative solutions.

This error message often appears when the user fails to properly configure the network bridge, leading to incomplete or missing adapter information in the bridge properties.

🛑 Root Causes of the Error

  • The primary cause of this error is related to the way Windows handles the creation of network bridges. When a user selects multiple adapters to bridge and then right-clicks on one of them to configure the bridge, Windows may not properly update the adapter information for the other selected adapter. This can result in an incomplete or missing adapter configuration in the bridge properties.
  • An alternative reason for this error could be related to driver issues or conflicts between the Intel I210 NIC drivers and the network bridge configuration process.

🔧 Proven Troubleshooting Steps

Configuring Network Bridge via ncpa.cpl

  1. Step 1: Open the Network Connections Control Panel (ncpa.cpl) and select the two adapters to be bridged. Ensure both adapters are enabled and have a valid IP configuration.
  2. Step 2: Right-click on one of the selected adapters and select 'Bridge Connections' from the context menu. This will open the Bridge Connection Properties dialog box.
  3. Step 3: In the Bridge Connection Properties dialog box, click on the 'Advanced' tab and ensure that the 'Allow virtual network adapter to be created in this bridge' checkbox is enabled.
  4. Step 4: Click 'OK' to save the changes and close the dialog box. Repeat these steps for the second selected adapter.
  5. Step 5: Verify that both adapters are now bridged by checking the Network Connections Control Panel or the Device Manager.

Configuring Network Bridge via PowerShell

  1. Step 1: Open PowerShell as an administrator and run the following command to create a new bridge: `New-NetAdapter -Name 'Bridge Name' -InterfaceDescription 'Bridge Description' -LinkType Local`. Replace 'Bridge Name' and 'Bridge Description' with your desired values.
  2. Step 2: Run the following command to add the first selected adapter to the bridge: `Add-NetAdapter -Name 'First Adapter Name' -BridgeConnector 'Bridge Name'`. Replace 'First Adapter Name' with the name of your first selected adapter.
  3. Step 3: Run the following command to add the second selected adapter to the bridge: `Add-NetAdapter -Name 'Second Adapter Name' -BridgeConnector 'Bridge Name'`. Replace 'Second Adapter Name' with the name of your second selected adapter.
  4. Step 4: Verify that both adapters are now bridged by checking the Network Connections Control Panel or the Device Manager.

💡 Conclusion

To resolve the error 'an unexpected error occurred while configuring the network bridge,' try configuring the network bridge via ncpa.cpl, as described in Method 1. If this fails, consider using PowerShell to create and configure the bridge, as outlined in Method 2. Ensure that both adapters are enabled and have a valid IP configuration before attempting to bridge them. Additionally, verify that there are no driver issues or conflicts between the Intel I210 NIC drivers and the network bridge configuration process.

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