This indicates that the short file name creation is enabled. On the right side of the window, look for NtfsDisable8dot3NameCreation and make sure that its value is equal to 0. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem You can check to ensure that it is enabled by navigating to the following registry entry: Make sure the short file name creation is enabled on your computer. Short file name creation is disabled – Windows Installer Error 1603 Fatal Error During Windows MSI Installation From what we have collected and experimented, the error may occur if one of the following conditions isn’t set right. You will have to either re-download the installer, or seek help from the program community forums. We wouldn’t be able to show you an exact fix if it was the installer that was corrupted. This post will only show you the possible causes of the Windows Installer Error 1603 Fatal Error During Installation.
