When the user tries to connect to the bank or bank’s credit card account in QuickBooks Online, they have come across QuickBooks Error 350 . Users have seemed to report this error similar to the one mentioned above. “ Can’t Connect Bank Error 350 ” and “The old connection doesn’t work” are to name a few of these. Some users have even reported difficulties accessing bank feeds from PNC bank where an error message “PNC bank Connection not working; Security question does not match” displays on the users' screen. With this article, we give you the solution to all these bank connection errors. Look for your error below and resolve it with the troubleshooting steps provided. Reasons that trigger QuickBooks Error 350 Some of the causes why you are stuck with “Unable to Download Bank Transactions in QuickBooks” are as discussed below: The servers of your financial institution are down because of maintenance or they are being updated. QuickBooks is unable to establish...