What is QuickBooks error 1904 and What to do About it? QuickBooks offers various advanced features to users that make accounting and bookkeeping effortless. Despite such advancement, there are some annoying errors that interrupt users. One such is QuickBooks error 1904 that encounters when a user installs QuickBooks Desktop. On its occurrence, users gets an error message, “Error 1904: [file path / name / extension] failed to register.” The error mainly occurs because of incomplete QuickBooks registration and a damaged installation directory. Here, in this advisory blog, we will brief you on causes and solutions to fix error 1904 in QuickBooks, so read carefully until the end.