What are Quick Books Error H303? QuickBooks error H303 pop up when your company file needs additional configuration to run or when multi-user faces problems while finding the company file. Some such error is also like h101, H202, H505 which also occurs because of such reasons. In the easy words, you can say when your system is unable to find the way to the data file so you can … [Read more...] about QuickBooks Error H303 and Ways to solve error H303