Fix Teams Call Drops During Video after Docking a Laptop

When you dock your laptop to an external monitor and Ethernet, Teams video calls often drop within seconds. The call freezes, the audio cuts out, or the meeting disconnects entirely. This happens because docking changes the network adapter and the display output at the same time, which forces Teams to renegotiate the video stream. This article explains why the drop occurs and gives you step-by-step fixes for the network, display, and Teams settings that cause it.

Most drops trace back to a single root cause: the laptop switches from Wi-Fi to the dock’s Ethernet adapter, and Teams does not handle the network transition gracefully. The video call tries to re-establish a connection over the new adapter, but the old session times out first. You will also see issues with USB-based docks that change the graphics driver or the audio device, which can trigger a Teams error that ends the meeting.

You can fix the problem by locking the network adapter order, adjusting Teams media settings, and updating the dock firmware. The steps below cover each method so you can test which one works for your hardware.

Why Docking Your Laptop Drops the Teams Video Call

When you dock a laptop, Windows may switch the active network interface from Wi-Fi to the dock’s Ethernet port. This switch is not instant. The Wi-Fi adapter stays active for a few seconds, and the Ethernet adapter takes over. During that window, Teams sees two network paths and tries to renegotiate the media session. If the renegotiation takes longer than the session timeout, the call drops.

The second cause is the display change. Docking often changes the resolution or refresh rate, which forces Teams to re-encode the video stream. If your laptop’s CPU or GPU is already under load, the re-encoding can stall and cause a timeout. USB docks that use DisplayLink or Realtek chips add extra driver overhead, which can also trigger a Teams error.

The third cause is power management. Windows may put the Wi-Fi adapter to sleep when the Ethernet connection becomes active, and some docks do not wake the adapter properly. Teams then loses the network path entirely and ends the call.

Network Adapter Priority in Windows

Windows assigns a metric to each network adapter. The lower the metric, the higher the priority. When you dock, Windows recalculates the metrics. If the Wi-Fi adapter has a lower metric than Ethernet, the laptop may keep using Wi-Fi even though Ethernet is faster. This can cause packet loss and jitter, which Teams interprets as a failed call.

Steps to Fix Teams Video Drops After Docking

Start with the network fix because it addresses the most common cause. Then adjust Teams settings and update the dock firmware. Test after each step by docking and joining a video call.

Set Ethernet as the Primary Network Adapter

1. Open the network adapter settings
   Press Win + R, type ncpa.cpl, and press Enter. This opens the Network Connections window.
2. Open the Ethernet adapter properties
   Right-click the Ethernet adapter that corresponds to your dock, and select Properties. If you are not sure which one it is, look for the name that matches your dock brand, such as Dell, Lenovo, or HP.
3. Set the interface metric
   Select Internet Protocol Version 4 (TCP/IPv4), click Properties, then click Advanced. Uncheck “Automatic metric” and enter a value of 5 in the Interface metric field. Click OK on all dialogs.
4. Restart Teams
   Close Teams completely from the system tray, then reopen it. The new metric takes effect immediately, but a restart ensures Teams picks up the change.

Disable Wi-Fi When Docked

1. Turn off Wi-Fi manually
   Press Win + A to open Quick Settings, then click the Wi-Fi icon to disable it. This forces Windows to use only the Ethernet adapter.
2. Use a script to automate the switch
   Create a batch file with the following content: netsh interface set interface "Wi-Fi" disable and netsh interface set interface "Ethernet" enable. Run this script after docking.

If you prefer a permanent solution, use the Windows registry to set a higher priority for the Ethernet adapter. Open Registry Editor, go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces, find the Ethernet interface GUID, and set the InterfaceMetric DWORD to 5. Restart the laptop.

Adjust Teams Video and Audio Settings

1. Open Teams settings
   In Teams, click your profile picture at the top right, then select Settings.
2. Change noise suppression
   Go to Devices, find Noise suppression, and set it to Low or Off. High noise suppression uses more CPU, which can cause video stalls during a dock transition.
3. Disable hardware acceleration
   In Settings > General, scroll to Hardware acceleration and turn it off. This reduces the load on the GPU, which helps when the display changes during docking.
4. Set video quality to low
   In Settings > Devices, under Camera, select “Low” for video quality. This reduces the bandwidth required, making the call more resilient to network changes.

Update Dock Firmware and Drivers

1. Check the dock manufacturer’s support page
   Go to the support site for your dock brand, such as Dell, Lenovo, HP, or Anker. Download the latest firmware update utility.
2. Run the firmware updater
   Connect the dock to your laptop, then run the firmware updater. Follow the on-screen instructions. Do not disconnect the dock during the update.
3. Update the Ethernet and display drivers
   Open Device Manager by pressing Win + X and selecting Device Manager. Expand Network adapters and Display adapters. Right-click each device and select Update driver > Search automatically.

Disable Power Management for the Network Adapter

1. Open Device Manager
   Press Win + X and select Device Manager.
2. Open the Ethernet adapter properties
   Expand Network adapters, right-click the Ethernet adapter, and select Properties.
3. Disable power saving
   Go to the Power Management tab, uncheck “Allow the computer to turn off this device to save power”, and click OK.

If Teams Still Drops Calls After the Main Fix

Teams Shows “Network Connection Lost” After Docking

This error appears when the network adapter changes during the call. The fix is to disable Wi-Fi before docking, or to set the Ethernet metric as described above. If you use a USB-C dock, also check that the dock’s Ethernet driver is up to date.

Video Freezes for a Few Seconds Then Recovers

This usually happens when the display resolution changes. Teams re-encodes the video stream, which causes a brief stall. Set the external monitor to the same resolution as the laptop screen, or lower the video quality in Teams to Low.

Audio Drops but Video Continues

The audio device may switch from the laptop speaker to the dock’s audio output. Check the audio device in Teams Settings > Devices. If the wrong device is selected, the call may drop the audio stream. Change the speaker and microphone to the dock output and test again.

Teams Crashes Completely After Docking

A full crash points to a driver conflict. Update the dock’s DisplayLink or Realtek drivers, and disable hardware acceleration in Teams. If the crash persists, reinstall Teams by going to Settings > Apps > Microsoft Teams, then click Uninstall and reinstall from the Microsoft 365 portal.

New Teams vs Classic Teams: Docking Behavior Compared

Item	New Teams	Classic Teams
Network renegotiation	Faster, but still drops on adapter switch	Slower, more likely to drop
Hardware acceleration	Can be disabled in Settings	Same setting available
Driver compatibility	Better with USB docks	Older drivers may conflict
Recommended for docking	Yes, after applying the fixes	No, switch to New Teams

After applying the network metric fix and disabling Wi-Fi, your Teams video calls should survive docking without dropping. Test the fix by docking and joining a test call with a colleague. If the problem persists, update the dock firmware and switch to New Teams, which handles network changes more reliably. As a final tip, use the keyboard shortcut Ctrl+Shift+U to mute your microphone before docking, which reduces the media session load during the transition.