This error message simply means that your username or password for your email account is incorrect in the “Email Setup” screen. Double-check both your username and password under the “Advanced” section on the “Email Setup” screen.
The first thing to do is to right-click on the “Cashbook Complete” icon and choose “Run as Administrator”. If the problem continues after that, please do the following:-
The full error message often looks like this: “Microsoft Access was unable to initialize the Windows Registry. Rerun Microsoft Access or Microsoft Office Setup to reinstall Microsoft Access.”