This sounds like its a surface book issue. After running updates on the Surface book 2 and then installing Adobe Animate CC 2018, pen pressure was not available but I was still able to use the surface pen to paint within Animate CC. I then downloaded the same Wintab_x64_1.0.0.20.zip from the Microsoft Download Center and installed the driver. Pen pressure was then made available in Animate CC. Fixing Surface Pen Pressure in Windows 10 – Patrick Deen
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