Resolving QuickBooks MAPI Reauthentication Issues When you have already entered the necessary credentials and QuickBooks keeps asking you to enter your password, you are experiencing problems with QuickBooks MAPI reauthentication. Usually, this issue is caused by obsolete software, security settings that prevent QuickBooks from communicating with your email client, such as Microsoft Outlook, or problems with email client configurations. Making sure your email client is properly configured and set as your system's default email application is the first step in fixing these problems. For More : https://a2autocare.com/article/quickbooks-mapi-keeps-asking-for-password/