QB Error 1603 It is not unusual to encounter some technical difficulties at the time of installing QuickBooks Desktop on the system. Generally, various error codes shoot up on the screen as soon as the QB Desktop installation process gets failed & one of the best examples of such an error code is QB Error 1603 . Here, the error message just states that the update installer cannot do the required task due to problems in some internal Windows components. Here, you shall swiftly
