Hi Friend, I am Harry parker. Worked in various companies as a technical support executive for the last five years. I used to take care of all technical issues. I got many calls in a day regarding the various problems of the QuickBooks error from the different users. However, QuickBooks error 9999 is one of the most common among all. The good part regarding this problem is that you can resolve it quickly and easily on the own. However, if you are unable to fix it, you can connect with me through call. I will help improve this issue in a phone call in elementary steps.