Does "add printer error 740" apply to all types of printers (local, network, USB), or only specific ones?

Error 740 can apply to virtually all types of printers (local USB, network, wireless) because the underlying cause is the requirement for administrative privileges to make system-level changes. These changes are often necessary regardless of connection type, for tasks like installing printer drivers, creating printer ports, or configuring system services. While merely connecting to an already installed and shared network printer might not always require elevation, the initial installation or adding of a new printer, especially with a new driver package, will typically trigger this privilege elevation requirement.