I use Acrobat on a Surface Book 2 (using only the tablet portion without the keyboard attached) to edit documents. Since Acrobat has a pen tool already, which allows me to "ink" directly on a pdf (a function that Adobe has made available for quite a long time), I want to use my Surface pen as a "mouse" and as a pen in the input panel--which is the way I've used it up until recent Windows 10 updates apparently changed the way the pen functions in Acrobat. Has anyone discovered a way to disable Windows Ink in Acrobat, enabling the pen to be used for a broader range of purposes than just inking? This change has completely obliterated the way I use my tablet and pen in Acrobat, and like others, I'm frustrated with the loss of functionality.
I found the answer! On the top menu bar (up by File, Edit, View . . . ) choose Edit. Go to Preferences, and then Commenting. The last choice is "Auto Detect pen hardware to enable markup." Take the check out of this box and save. This allows the Surface Pen to become a stylus again.