Windows Update failed to install. When the Windows Update utility fails, fixing it is usually easy and just requires you to figure what the issue is and why it's happening. Windows 10 Cumulative Update KB3081424, KB3081436, KB3081438 fails to install. While the update process has gone smoothly for most, some are reporting that KB3081424 failed to install, with the installation process halting at a particular point and system rebooting half-way in some cases. KB4040724 Direct Download Links. If you do not want to get the update automatically, then download the update from here, and install it on your system even if you are not connected to the internet. Download Cumulative Update KB4040724 For Windows 10 Version 1703 for 64-bit. Download Cumulative Update KB4040724 For Windows 10 Version 1703 for 32-bit.