UPDATE July 31, 2015
A good solution for users who have upgraded from Windows 8 / 8.1 is suggested in the comments by Tobias Shen:
The final solution was I uninstalled my Lenovo Pointing Device driver [device manager, mouse and other pointing devices], went to their website and downloaded the windows 10 mouse driver.
After a reboot, just start checking for updates from WIndows Update to start the download and installation of the updated driver.
UPDATE: With the latest builds of Windows 10 you can install the updated Synaptics drivers through Windows Update , which no longer requires this procedure.
I’m testing the Windows 10 Technical preview: i find some problems, but the new microsoft’s OS is light and stable.
However, on my Lenovo notebook with Synaptics touchpad the “two-finger scroll” (osx-like, very useful) seems not work.
After a quick search on support forums, i have found a very simple solution:
- Open Registry Editor (Windows + R, type regedit and hit Enter)
- Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Synaptics\SynTPEnh
- Create a new DWORD called UseScrollCursor with a value of 0.
- Logoff or Restart
Other posts about Windows 10 issues: