The July 2019 updates for Surface devices focused on improvements to Bluetooth and WiFi connectivity.
The updates can be applied to all Surface devices that run Windows 10 May 2019 update version 1903 or greater.
|Windows Update History Name||Device Manager Name|
|Marvell Semiconductor, Inc. – Bluetooth – 15.68.17013.110||Marvell AVASTAR Bluetooth Radio Adapter – Bluetooth
|Marvell Semiconductor, Inc. – Net – 15.68.17013.110||
Marvell AVASTAR Wireless-AC Network Controller – Network adapters
While the Microsoft Support site reports that “currently, there are no known issues”, some Reddit and Microsoft Answers forum users have experienced otherwise.
After installing the Marvell Semiconductor, Inc. – Net – 15.68.17013.110’ driver update, users found they have been unable to connect to 5Ghz band WiFi.
The error message reads “unable to connect to this network when attempting to connect to the 5Ghz band WiFi; but the same users were able to connect to 2.4Ghz WiFi without a problem.
Windows would say “Unable to connect to this network” when I tried although other networks could be used okay. Forgetting my home network didn’t fix it. Toggling airplane mode didn’t fit it. Restarting didn’t fix it.
I have since discovered that this is being caused by version 15.68.17013.110 of the Marcell drivers being offered through Windows Update. As soon as Windows installs that again following the removal from Device Manager, the issue comes back. I have confirmed this by installing the driver update 5 times, and fixed it each time by uninstalling the device and driver to cause it to fall back to the stock driver.
The driver was bundled with the latest firmware update, and has been found to affect various Surface models.
Until Microsoft recognises this issue and a subsequent bug fix has been released, you can revert to previous driver versions for the network adapter.