ODL file format description

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

2 filename extension(s) found in our database.

.odl - Object Description Language

The ODL development files are related to Microsoft Visual Studio. The ODL file is an Object Description Language. Object Description Language (ODL) was the original interface definition language created by Microsoft for specifying interfaces to be used in OLE Automation.

Microsoft Visual Studio
Development files
- / -
Object Description Language related extensions:
IBM Rational XDE ACX Data
AdminStudio Repackaging Wizard Output
TURBU Editor RPG Script
IAR System C-SPY Macro Definition Data
Nasal Script
MakeCode Program

.odl - Microsoft OneDrive Client Log

The ODL data files are related to Microsoft OneDrive. The ODL file is a Microsoft OneDrive Client Log. Microsoft OneDrive is a file hosting and synchronization service operated by Microsoft.

Microsoft OneDrive
Data files
- / -
aodl, odlgz
Microsoft OneDrive Client Log related extensions:
Medlin Payroll Software Bank Reconciliation Data
DucatiDiag Data
QuarkXPress Desktop Color Separation Data
IBM Rational Rose Logical Package
Microsoft Frontpage HTML Data
XYplorer Script

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

Can't open a .odl 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 .odl file extension is often given incorrectly!

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

dl, dol, idl, kdl, ldl, ocl, od, od1, odi, odm, odo, odp, ofl, ol, old

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

OpenDocument Image
E-Sword v8 Overlay Data
Atari Jaguar Debugger Script
Visual Studio C++ Interface Definition Library
Object-Relational Language Data
DB-MAIN Text Pattern Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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DataTypes.net >> ODL file