Greetings, My name is bizbooksadvice & I am a technical expert. Do you know that QuickBooks is one of the most popular programs used for accounting purposes, but on a daily basis, many problems arise, such as QuickBooks Error 1904. There are numerous potential causes for the problem, including a faulty or incompletely installed QuickBooks application and a service key that is still valid. Therefore, if QuickBooks Error 1904 for you, try these solutions. If you're non-technical person, don't be concerned. you can get help me because I have more than 15 years of expertise in this field.