Are you worried about QuickBooks error 108? Financial problems are the main cause of QuickBooks error number 108. Possible causes of this error include problems with your bank or QuickBooks. Because you altered your login details but QuickBooks did not save the changes, your bank or credit card company may have gotten a notification stating that QuickBooks is no longer linked. To correct this mistake Check the messaging on your credit card or the bank's website for any updates. If the bank's server is offline, wait a little while before resuming your activity.