Several useful applications can be integrated with QuickBooks Desktop. MS Outlook is integrated to provide email services. When you try to send an email through your QuickBooks Desktop application, you may come across QuickBooks Outlook is not responding error. This can happen due to settings inconsistencies or damaged files such as the MAPI32.dll file. You can fix the damaged .dll file by clicking on the Fixmapi.exe file in your system drive. Contact us at our 844-932-1139 if you need help.