Is the error 108 in QuickBooks troubling you? QuickBooks error 108 is caused by banking issues. Certain issues at the end of your bank or QuickBooks can result in this error. It can be caused by a message from the credit card company or your bank which may have blocked the connection with QuickBooks, or you may have made some changes to your credentials that did not get saved in QuickBooks. To fix this error Check Messages on your Credit Card or the bank’s website, and get updates from the bank, in case the server of the bank is unavailable wait for some time and then start your process.