File extension SYS (.SYS) information

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Windows cannot open SYS files?

If Windows is unable to open file extension .SYS you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a free registry scan.

Appropriate program:

On the Windows 9.X and Dos operating systems the .SYS files are systems files, used for saving the various data, configurations and functions used by the operating system. Files such as the IO.SYS, CONFIG.SYS and the MSDOS.SYS contain essential information, such as device drivers. Although they can be opened and viewed with a text editor they should be modified with caution.. Incorrect associations are the cause of many file extension errors. Scan your system to prevent, identify and repair SYS file extension association errors.

Recommendations for file extension SYS users:

General information

Common errors/





File extension SYS scan

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You are currently viewing the detail page for SYS file extension. This page contains a detailed description of the SYS file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.
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