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#11
I had the problem on my Toshiba T135 notebook which has a Synaptics touchpad. Initially after the update to Windows 10 the touchpad was fully functional, but after this latest round of Microsoft updates the ability to scroll with the touchpad had disappeared. Found that the Synaptics driver had been updated to v19.0.10. Jumped through all the hoops of deleting/re-installing the driver, etc. without any success. Finally downloaded and installed the most recently posted Synaptics v19.0.14.31 driver (tcg0006700g.exe) from the Toshiba support website. That fixed the problem for me and now all of the features appear to work. Hopefully, Microsoft Update will accept it as a more recent driver and not overwrite it with their broken version.
I have had the same issue and found in my case to be a loss of configuration after the Windows 10 migration within the Synaptics control center. You might want to go to the Synaptics icon in the notifications area (bottom right hand side of the screen), Right Click>Properties>Scrolling/Movement (third tab, my system is in Spanish so not sure how the original tabs are denominated).
Here you have the scrolling options: two-fingers use is marked and one-finger use was unmarked in my case. I marked the two boxes for horizontal and vertical and tada! Scrolling worked again.
Hope this helps :)
Many systems don't have these options, and there's no way to configure one-finger scrolling. However, two-finger scrolling works quite well once you figure out the possible inputs. Namely, scrolling and zooming (possibly among others). Scrolling requires two fingers to move together *in unison*. Zooming requires a pinching/spreading vertical or diagonal movement (note that just one finger needs to move). Once you get used to these two different inputs, you'll likely prefer them to single-finger scrolling, although the transition does take getting used to.