A number of QuickBooks Online users started getting error 9999 while connecting with their banks after a recent update made to the connections that QuickBooks Online use to connect with the user’s financial institution. According to Intuit, Error 9999 in QuickBooks Online is caused by a script error in the browser. Once you encounter QuickBooks Online error 9999, it will not let you update bank feeds or download any transactions from the online banking website and gives you an error message “Sorry, we can’t update your account. Please try updating again later (9999)”. In this article, we will show you a step by step method to get this script error 9999 resolved. Follow the complete article for detailed troubleshooting instructions.