|Check to see if you still have the CUSTOM.DIC file. Look in: C:\Users\<your user name>\AppData\Roaming\Microsoft\UProof|
If the AppData folder isn't visible, go to Control Panel (small icons) > Folder Options, click on the View tab, select the button for "Show hidden files, folders, and drives" & also uncheck the box next to "Hide extensions for known file types", then click Apply.
EDIT: the above explanation is for Win7, I just noticed you have Win10
message edited by riider