QuickBooks File Doctor has the following advantages: This program makes it simple to fix problems with network and connectivity configuration. It mostly serves the purpose of resolving issues in the -6000 series, including QuickBooks Error 6150, QuickBooks Error 6000 305, Error Code 6189, etc. In addition, it is the preferred tool for fixing errors in the H series, such as Error H101, Error H202, Error H303, etc. This tool can save the day by helping you back up all of your important data in the event of data loss and corruption.