When installing or updating QuickBooks, issues might arise because of faulty files, incomplete downloads, or system incompatibilities. Typical mistakes are Errors 1402, 1904, 1935, and 1603. Inadequate permissions, out-of-date Windows, or a missing.NET Framework can all cause these problems. They can be fixed by correctly reinstalling QuickBooks, updating software, or using the QuickBooks Install Diagnostic Tool.For assistance, call the QB support team at 1.855.738.2784.