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UDF file: How can I open a .UDF file?

The table below provides useful information about the .udf file extension. It answers questions such as:

We hope you find this page helpful and a valuable resource.

✅ Windows NT Uniqueness Database File

.udf
Windows NT Uniqueness Database File .udf file icon
Description:
The UDF file is a Windows NT Uniqueness Database File. Unattended Setup with Windows NT supports the use of the Uniqueness Database File (UDF), which provides the ability to specify per-computer parameters. The UDF is an ASCII text file created using a simple text editor.
The UDF format description is not yet available
Category: Data files
Application: Notepad
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UDF aliases:
-
UDF related links:
-
UDF related extensions:
-

✅ Universal Disk Format Image

.udf
Universal Disk Format Image .udf file icon
Description:
The UDF file is a Universal Disk Format Image. Universal Disk Format (UDF) is an open, vendor-neutral file system for computer data storage for a broad range of media.
Category: Disk Image files
Application: Linux UDF
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UDF aliases:
-
UDF related links:
-
UDF related extensions:
-

✅ UYAP Editor Document

.udf
UYAP Editor Document .udf file icon
Description:
The UDF file is an UYAP Editor Document. UYAP Editor is a Turkish word processing application.
The UDF format description is not yet available
Category: Document files
Application: UYAP Editor
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UDF aliases:
-
UDF related links:
-
UDF related extensions:
-

✅ PI Expert Document

.udf
PI Expert Document .udf file icon
Description:
The UDF file is a PI Expert Document. PI Expert Suite is a power supply design productivity software for Microsoft Windows.
The UDF format description is not yet available
Category: Document files
Application: PI Expert Suite
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UDF aliases:
-
UDF related links:
-
UDF related extensions:
PI Expert Data

✅ Microsoft Excel User Defined Function Data

.udf
Microsoft Excel User Defined Function Data .udf file icon
Description:
The UDF file is a Microsoft Excel User Defined Function Data. Microsoft Excel is a spreadsheet application developed by Microsoft for Microsoft Windows and Mac OS.
The UDF format description is not yet available
Category: Data files
Application: Microsoft Excel
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UDF aliases:
-
UDF related links:
-
UDF related extensions:
Microsoft Works Spreadsheet

Quattro Pro Spreadsheet

Microsoft Excel VBA Add-in

Microsoft Excel toolbar Setup

Microsoft Excel Chart File

Microsoft Excel Dialogue

⚠ Be careful with .udf files.

It's important to know that the .udf file extension can be used by various programs, not just the ones you expect. This includes potentially harmful software or malware that might create .udf files. Be cautious when dealing with .udf files from unknown sources.

🚫 The .udf file extension is often given incorrectly!

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

df, duf, hdf, idf, jdf, kdf, ucf, ud, udb, udc, udd, udg, udr, udt, uef

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Microsoft Dynamics AX User Database

MIDI Instrument Definition File

Universal Subtitle Format File

Unified Emulator Format

Adobe InDesign User Dictionary

Job Definition Format File

🔴 Can't open a .udf 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:

Select an app to open this .udf file

It means that the operating system does not have a default app associated with the .udf file type. To resolve this issue and open the file, you can take the following steps:

If you don't know how to change the default app for the .udf file, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. The extension of a file serves as a hint to the operating system and various software programs about the type of data contained within the file. When you alter a file's extension, you essentially modify how software applications interpret and handle that file. Every file has a specific format, also known as its file type or file format. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .udf file extension, write to us.

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