Files with sys file extension can be often found as various system files in DOS / Windows and other operating systems. They contain information needed to properly load and configure operating system. A corrupted or missing system file can cause the system to be unstable or unable to boot.
Software that open sys file
SYS file extension - System file
What is sys file? How to open sys files?
File extension sys is traditionally associated with system files, which contain code needed to properly load and configure Windows and were also used in MS-DOS system.
The sys files can also be part of hardware drivers and contain various instruction for their flawless operation. But make sure to always install drivers from reliable sources.
If you are not certain about your .sys files, it's better to leave them alone and do not delete them. A corrupted or missing system file can cause the system to be unstable, unable to boot or data loss.
Typically, files with sys file extension include config.sys, pagefile.sys, hiberfil.sys and other files located within the root or Windows directory.
Updated: December 30, 2024
The default software associated to open sys file:
Company or developer:
Microsoft Corporation
A family of operating systems developed by Microsoft Corp. The first Windows was released in 1985 as a GUI add-on to MS-DOS. Currently, the latest version is Microsoft Windows 11.
List of recommended software applications associated to the .sys 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 sys file, edit sys file, convert sys file, view sys file, play sys file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with sys file - System file
Click on the software link(s) for more information. Suggested software applications use sys file type for internal purposes and/or also by different way than common edit or open sys file actions.
Microsoft Windows:
Multiplatform:
CP/M (obsolete/discontinued)
