Some UDF files may instead be Excel User Defined Functions created by Microsoft Excel that will execute certain predefined functions when opened. Others could be Ricoh address books that hold user information. Note: UDF is also an acronym for some unrelated technology terms like uniqueness database file, user-defined feature, user-defined font, and ultra deep field. How to Open a UDF File Universal Disk Format files that have the UDF extension can be opened using or a file unzip utility like. UDF scripts that are Excel User Defined Functions are created and used by via its built-in Microsoft Visual Basic for Applications tool.
This is accessible through the Alt+F11 shortcut in Excel but the actual script content probably doesn't exist with the.UDF file extension, but is instead stored within Excel. UDF files that are Ricoh address book files require the now discontinued SmartDeviceMonitor for Admin software from Ricoh. See our for a listing of file extensions to avoid and why. Broadsoft Outlook Toolbar Picture. Tip: Use Notepad or to open the UDF file. Many files are meaning no matter the file extension, a text editor may be able to properly display the file's contents.