In response to the comment above, another user has shared that: Otherwise, you may have to try freeing up some disk space off the hard drive.

If you needed the SD card for additional disk space, see if you have a USB/Mini-USB port available that you can use instead for the upgrade. If your install is freezing at 44%, check if you have an SD card inserted and remove it, and the update should be able to progress beyond this spot. We’ve observed that some devices that have an SD bus with an SD card inserted while installing the Windows 10 November update will stop responding at 44%, and we are currently investigating the issue. Microsoft support engineers have given the following explanation: When installing the Windows 10 November update, progress gets stuck and hangs at 44%. Progress installing the Windows 10 November update stops responding at 44%. Оne of the problems reported on Microsoft answers is the following:

Problems Emerged from the Upgrade to Windows 10 Fall Update The installation itself can take at least half an hour or longer. The first thing to keep in mind is that the Windversion initiates a download process of about 3GB files. Users have already shared their complaints on Microsoft answers and social spots such as Reddit. Also referred to as Fall Update and Treshold 2, the Windows-as-a-service upgrade has been seen to cause some issues (no surprises here, really). 0 Comments Microsoft, Windows 10, Windows Update

Speccy windows 10 fall update