You're here because you have a file that has a file extension ending in .ulz. Files with the file extension .ulz can only be launched by certain applications. It's possible that .ulz files are data files rather than documents or media, which means they're not meant to be viewed at all.

A USBlyzer data capture file is generally classified as a data file that consists of data recorded by the USBlyzer program, and data encoding standards and text formatting attributes are integrated into these USBlyzer data capture files so its content can be saved and stored in the ULZ file format. Affixed with the .ulz extension, the content stored in a USBlyzer data capture file may consist of a hierarchical list of USB devices connected to a computer with the USBlyzer application installed in it. Text descriptions associated to each of these connected or synched USB devices are stored and provided by the corresponding USBlyzer data capture file through the Graphical User Interface (GUI) of the USBlyzer software. The USBlyzer application is a program implemented with a set of functionalities used for protocol data compilation and analysis. Data categorized as structural IRP and URB content may be stored in these USBlyzer data capture files. Details about transfer bufferring systems and USB device driver element names can also be saved in a USBlyzer data capture file among other details like I/O request packets, USB-related requests and outgoing or incoming USB traffic figures.

Launch a .ulz file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .ulz file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .ulz files aren't yet associated with it. In this case, when you try to open a .ulz file, you can tell Windows which application is the correct one for that file. From then on, opening a  .ulz file will open the correct application. Click here to fix .ulz file association errors

Be careful not to rename the extension on .ulz files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .ulz. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.