Thunderbolt 3 dock not working in Windows 10 after the April 2018 update? We can help!

On April 30th Microsoft released a large update to Windows 10 known as the ‘Windows 10 April 2018 Update’. Since the release, we have had a handful of reports from customers using our Thunderbolt 3 docking stations (such as the TBT3-UDV and TBT3-UD1-83) that after the update the dock’s video outputs would continue to work, but the dock’s USB ports, Ethernet port or audio port would stop functioning. (Note that this behavior can happen with all brands of Thunderbolt devices, and is not specific to Plugable devices.)

In all the cases we have seen so far, the cause was determined to be that the Thunderbolt device lost its authentication status in Windows during the OS update. To expand further, in Windows there are security measures in place which require Thunderbolt 3 devices to be authenticated or ‘approved’ before certain elements will function. While video outputs will always function regardless of authentication status, the USB ports, Ethernet port and audio port will not work if they are not properly authenticated.

If things stop working as expected, the best path forward is to uninstall and reinstall the Intel Thunderbolt software (with an updated version if available) to help ensure that the Intel Thunderbolt software that controls the authentication process is in a good state. To do so, follow the steps below:

1. Disconnect the Plugable Thunderbolt 3 dock from the system and remove its power cable so it turns off completely. Please keep it disconnected until prompted.
2. Uninstall the Intel ‘Thunderbolt Software’ present on your system via the Control Panel -> Programs and Features.
3. Restart the system, even if not prompted.
4. Download and install the latest version of the Intel Thunderbolt Software published by your system manufacturer. If you are unable to obtain this download from your system manufacturer, you can download a version directly from Intel here ->
5. Restart the system once again, even if not prompted.
6. Reconnect the power cable to the Plugable Thunderbolt 3 dock, and then reconnect the Thunderbolt 3 cable from the dock to your system.
7. You should be prompted to authenticate/approve the dock, similar to what we show here -> Please approve the device as shown in the example using the ‘Always Connect’ option. * There is a chance the approval prompt will not pop-up automatically. If that is the case please just proceed with the next step for now. *
8. Please test any non-functioning ports in the dock again.

If that does not help and you are using a Plugable Technologies product, please reach out to us directly via with a PlugDebug file ( and we will be happy to help.

23 comments on “Thunderbolt 3 dock not working in Windows 10 after the April 2018 update? We can help!”

  1. Vincent Griffith Reply

    Followed your list here. My computer is crashing when I have my Thunderbolt 3 devices connected.

    • Kim Reply

      Thank you! Been having USB port issues for a while and then after a Windows Update a few weeks ago (~September 2019), all remaining live USB ports stopped working on both my docks (home and work). Lenovo forums were no help. This solution solved it! I was not prompted to authenticate the dock but it did not matter. One thing to add: I had to unplug each USB device and plug it back in. Every one of my USB ports is functioning now, and all in use at once.

      • Bob Boerner Reply

        Thank you for sharing your experience with us Kim, and glad we could be of help!

  2. Ian Reply

    I have a new ThinkPad and Thunderbolt docking station. a couple days ago my pc had an issue where it looked like I needed to update the firmware. I did so. Now it is operational but If I shut down and then power up, USB’s do not work. If I then restart, the USB’s do work. Any thoughts? Should I uninstall and reinstall the software as above? Seems odd to have to restart all the time.

  3. Daniel Furrer Reply

    I came across this post and it helped me solving the same problem after the Win 10 1903 Upgrade.

    Thanks for sharing

  4. Tom Reply

    Thanks for posting this article. I fumbled around for an hour on lenovo’s site trying to figure out why my new Thunderbolt 3 workstation doc wouldn’t work with my P72 laptop. This solved it!

  5. Jimbo Reply

    I can’t even complete the firmware installation. The install itself insists I plug in the dock, but it can’t detect it even when it is plugged in and switched on.

    • Bob Boerner Reply

      Hi Jimbo,

      The procedure outlined in our post does not describe updating any firmware, so afraid we are not quite sure what specifically you are attempting. If you are using a Plugable Thunderbolt 3 docking station, please reach out to us directly via and we will be happy to help. Please also include the Amazon Order ID number for your Plugable purchase and a PlugDebug file (

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