An ls1 file extension is associated with the Microsoft Winhelp.
Software that open ls1 file
LS1 file extension - Microsoft Winhelp source data
What is ls1 file? How to open ls1 files?
The .ls1 file extension is related to the Microsoft Winhelp a Windows help files authorizing and editing application. The Winhelp file format is based on Rich Text Format (RTF). The ls1 file stores data sources.
WinHelp was removed in Windows Vista to discourage software developers from using the obsolete format and encourage use of newer help formats.
This ls1 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.
The default software associated to open ls1 file:
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.
List of recommended software applications associated to the .ls1 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 ls1 file, edit ls1 file, convert ls1 file, view ls1 file, play ls1 file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with ls1 file - Microsoft Winhelp source data
Click on the software link for more information about Microsoft Windows. Microsoft Windows uses ls1 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
