Considering a dearth of really helpful information in your question, I can
only assume that you are referring to some sort of protected (on-ling) Word
form. I would guess that there is a macro that fires when the users exits
the checkbox something like this:
Sub CBOnExit()
With ActiveDocument
If .ProtectionType <> wdNoProtection Then
.Unprotect
If .FormFields("Check1").CheckBox.Value = True Then
.FormFields("Check1").Range.Font.Color = wdColorRed
Else
.FormFields("Check1").Range.Font.Color = wdColorAutomatic
End If
.Protect wdAllowOnlyFormFields, True
End If
End With
End Sub
If this is the case then you need to unprotect the form, double click the
checkbox and set Run Macro on Exit to "None."