I cannot enter text in any Windows program (e.g. Word, Outlook, etc.) using the iPad's on-screen keyboard while working in Parallels Access. Only the Return or Backspace keys are recognized but all other the symbols are not typed.
I can successfully log in to Windows and type in Windows's dialogs but not in applications.
ActiveWords (https://www.activewords.com) installed on your Windows computer or a virtual machine is interfering with the keyboard input from Parallels Access.
Turn off or uninstall ActiveWords.