QuickBooks Error 1328 is an installation/update error, often appearing as an \"FDI server error,\" caused by corrupted system files, invalid Windows registry entries, network issues, or improper software installation/shutdown, especially when the installer finds mismatching temporary (.tmp) files in the C:\\config.msi folder during updates or installs. It blocks further installation/updates and usually requires running diagnostic tools, renaming the problematic .tmp file, or performing a clean reinstallation of QuickBooks.