Notes about the UDF file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The UDF file type is primarily associated with 'Excel' by Microsoft Corporation. SQL User Defined Function Script file. Program: DEVENV.EXE.
Detailed information for file extension UDF:
Primary association: Excel
Program ID: udffile
Other applications associated with file type UDF:
- Photostyler Image Filter
- Uyap Dokuman Editoru (Document) by Türkiye Barolar BirliğiThis extension is used by the documents which are edited through Uyap Dava Editoru and used in UYAP, Ulusal Yargi Afi Projesi - National Justice Network Project in Turkey. [PDF link] This association is classified as Text.
- Windows NT Uniqueness Database File
- X-ray Diffraction Data File Format The identifying characters used for this association are - Hex: 53 61 6D 70 6C 65 49 64 65 6E 74 2C , ASCII: SampleIdent,
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.