QuickBooks Error Code H202 is a multi-user mode error that falls under the H series error. H series error involves errors such as H505, H101 and H303. These all are multi-user mode errors. Many users report this error especially when they switch from single-user mode to multi-user mode in QuickBooks. This error can also occurwhen a user tries to access a company file stored on another system. When this error occurs, it appears with a warning message on your screen as: You are trying to work with a company file that is located on another computer, and this copy of QuickBooks cannot reach the server on that computer. (H202) This multi-user mode error may prevent you from opening company files that are stored on another computer. You can follow the simple solutions provided here or contact our QuickBooks error support team through our helplines at +1-844-499-6700. Our certified accounting experts will provide you with the best assistance in resolving your errors.