What is the SYS File Extension?

Written by:   |   Last Updated: December 05, 2018

Microsoft Silver

SYS File Summary

The SYS File Extension has two different file types (mostly seen as the Windows System File format) and can be opened with three distinctive software programs, with the dominant related application developed by Microsoft Corporation (Microsoft Windows software). The SYS File Extension are listed predominantly as System Files.

SYS files are found on both mobile and desktop platforms and can be opened using Windows and Mac operating systems. The main SYS file type has a Popularity Rating of "Low", meaning these files are not frequently present on your typical desktop or mobile device.

If you are having problems opening SYS files, or would simply like to learn more about the software programs and developers that are associated with them, please see the complete information contained below.

Low
Popular
8513
File Rank

/ 11690

Active

Mode

5

December

2018

Amended

FileViewPro Opens SYS Files

Product by Solvusoft

Free Download

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Varieties of SYS Files

  2 known file types use this extension

Main SYS Affiliation

.SYS
Formatting:.sys
Type:Windows System File

This File contains settings, preferences and functions that are used to run Windows operating system. It should not be opened manually.

Author: Microsoft Corporation
Class:System Files
Entry: HKEY_CLASSES_ROOT\.sys

Software Programs That Open The Windows System File:


Microsoft Windows by Microsoft Corporation

Windows

Parallels Desktop for Mac by Parallels

Mac

Secondary SYS Associations

.SYS
Formatting:.sys
Type:Motorola Driver File

SYS File allows the phone to transfer files to and from computer. It is installed with the software installation CD included with the cell phone.

Author: Motorola
Class:System Files

Software Programs That Open Motorola Driver File Files:


Motorola MOTOCAST USB by Motorola

Compatible with:

Windows
Mac

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SYS Demand


Leading Device Types

Desktop (84.34%)
Mobile (14.29%)
Tablet (1.37%)


Sources of SYS Problems


Common Problems Opening SYS Files

Microsoft Windows Disappeared

You encounter an error message such as "%%os%% Can't Open SYS Files" when trying to open your SYS. Usually, this is because you do not have Microsoft Windows for %%os%% installed. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.


Tip: If you don't have Microsoft Windows installed, and you know of another program to open your SYS file, you can try opening it by selecting from the programs listed under "Show Apps".


Incorrect Microsoft Windows Version

In some cases, you might have a newer (or older) version of a Windows System File file that is unsupported by your installed application version. Visit the Microsoft Corporation website to download (or purchase) the latest version of Microsoft Windows. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.


Tip: Investigate your SYS file by right-clicking and selecting "Properties" to find clues on what version you need.


Primarily, problems experienced when opening SYS files are due to having the incorrect version of Microsoft Windows installed on your computer.


Additional SYS Opening Issues

You can still experience errors opening SYS files even with the latest version of Microsoft Windows installed on your PC. If you are continuing to have errors with loading SYS files, other external issues might be to blame. These other problems include (listed in order from most to least common):

  • File references in the Windows Registry for SYS are wrong
  • Unintentional removal of the description of the SYS file inside the Windows Registry
  • Invalid installation of a SYS-associated program (eg. Microsoft Windows)
  • Your SYS file is corrupted (issues with your Windows System File file itself)
  • Your SYS is infected with malware
  • Device drivers for SYS-related hardware are out-of-date
  • Your PC doesn’t have enough available resources to open the Windows System File file

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