When a user tries to log into their bank account or when QuickBooks is unable to connect to the bank's website, QuickBooks Error 103 appears. It may occur for a number of reasons, including bad server configuration, poor internet access, or out-of-date software. When this error happens, the user can get an error message that says, "We can't connect to your bank" or "Oops, something went wrong." Users may not be able to view their bank transactions due to this error, which may also slow down the accounting procedures. Users can try updating their QuickBooks software, checking their login information, checking their internet access, or calling their bank for help to attempt and fix this problem. It is advised to contact technical support at 1-855-856-0042 for additional assistance if the problem continues.