QuickBooks may be a premier accounting software that's trusted by countless small and mid-sized business owners across the world. However, to form the foremost of the innovative software, one should keep upgrading and updating it. Sometimes, within the process of putting in the software, users may stumble upon QuickBooks desktop Error 1603. An installation error may cause this error code. A probable reason of the occurrence of this error is running one or more other applications within the background while updating QuickBooks. Go through the blog for more information, and dial 800-579-9430 if you need expert advice on this problem.