Windows 10 lets you use handwriting input in any application, and many applications include full support for inking. Windows automatically attempts to learn your unique handwriting style when you write with a pen, but you can also train it manually to improve the system’s handwriting recognition.
Automatic learning is enabled by default. To check whether it’s still enabled, , click the “Advanced settings” link at the left pane of the Control Panel > Clock, Language, and Region > Language window. Under Personalization data, ensure the option is set to “Use automatic learning (recommended)” so the system automatically attempts to learn your handwriting.