QuickBooks Error law belongs to the company file issues order and comes under the 6000 error series of QuickBooks. However, you may lose your data fully, If you do not resolve them manually. This can be veritably serious issue for you because losing your data can hinder your business poorly. Still, there can be multiple reasons due to which you may lose your data. Well, you still do not have to worry because QuickBooks has the option to recover your lost data through its QuickBooks Data Recovery program. Let’s look at how to fix QuickBooks Error 6000 78.