>> PNNU file

PNNU file format description

Many people share .pnnu files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .pnnu file can be edited, converted or printed with. On this page, we try to provide assistance for handling .pnnu files.

1 filename extension(s) found in our database.

.pnnu - Norton Utilities Data

The PNNU data files are related to Norton Utilities. PNNU file is a Norton Utilities Data. Norton Utilities is a utility software suite designed to help analyze, configure, optimize and maintain a computer.

Norton Utilities
Data files
- / -
Norton Utilities Data related extensions:
Adobe FrameMaker Data
Animation-ish FlipBook-ish Document
Animation-ish Wiggledoodle-ish Document
Palm OS Desktop Data
CIKernel Data
Apache SOLR Data

Naturally, other applications may also use the .pnnu file extension. Even harmful programs can create .pnnu files. Be especially cautious with .pnnu files coming from an unknown source!

Can't open a .pnnu file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .pnnu file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:


Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Peernet Label Designer Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .pnnu file format, then write to us!