Are you looking for an easy-fix procedure for QuickBooks error 12045? Most QuickBooks users are irritated by the error 12045 while updating the QuickBooks application. The major factor behind this error opt-out is the internet connection setting. Due to any disturbance in the internal connectivity the normal duration of downloading and updating the software increases.
When a user updates the software due to the slow internet speed application itself starts misbehaving during the updating process. Due to a lack of proper internet speed or any other misconfiguration in the system, the software itself terminates the update and prompts the error 12045. So the primary thing is that you have to understand the root cause of the error and follow the procedure accordingly to fix the QuickBooks error 12045.