What is a .UDF File And How To Open It – Microsoft


Have you downloaded a file with .udf extension, but you are not sure what it is? It is possible that you know what the file does, but you are unsure on how to open it. That’s why you are here! We have made this guide for you to learn more about the .udf file extension and how to open it.

What is a .UDF file?

The .UDF file extension is Microsoft Excel User-defined Function. The creator of this file extension is Microsoft. The format of this executable file is text.

What to know

There is currently 0 software that can open the .udf file on 0 platforms.


We don’t register any way of opening this file extension at the moment, kindly let us know if you have any information.