Files with old file extension may be usually found as various backup files from programs for Windows OS. Sometimes it's just a simple extension renaming.

Detailed description

Software that open old file

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OLD file extension - Backup archive

What is old file? How to open old files?

File type specification:

Backup file type icon Backup file type

The old file extension is frequently used for "backup" of various files. Extension of these files was changed to OLD in order to prevent them from accidently deletion or access by the users.

These files were used in numerous programs and operating systems, for example Microsoft Windows.

The default software associated to open old file:

Microsoft Windows icon

Microsoft Corporation logoMicrosoft Windows  Microsoft Windows software

Company or developer:
Microsoft Corporation

A family of operating systems developed by the Microsoft Corp. The first Windows was released in 1985 as a GUI add-on to MS-DOS. MS-DOS based Windows versions were developed to 2000, when was released the last version called Windows ME. Windows based on NT core started in 1993. Windows NT family are developed to these days, the latest version is called Microsoft Windows 11.

Help how to open:

Many programs use .old files, so it's hard to give a precise answer about how to open *.old files.

How to convert:

You typically cannot convert backup file directly, you have to recover the original files first. Sometimes simple rename of suffix to the original is enough.

List of software applications associated to the .old file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open old file, edit old file, convert old file, view old file, play old file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting old files.

Programs that can create old file - Backup archive

Programs supporting the exension old on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Microsoft Windows for create old file action.

Microsoft Windows:

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