File Extension Library


.SY_ File Extension

  • Developer by: Microsoft
  • Category: Compressed Files
  • Format: Binary

What are .SY_ files and how to open them?

Can't open .SY_ file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .SY_ file.

What is a .SY_ file extension?

.SY_ file extension is created by Microsoft. .SY_ has been classified as Compressed Files. The format of .SY_ file is Binary.

.SY_ is Compressed SYS File

Compressed .SYS file sometimes used by application installers to reduce the size of installation files; similar to a .EX_ or .DL_ file and can be expanded back to a SYS file using the Microsoft Expand command line utility with the following syntax:

expand file.sy_ file.sys

NOTE: SY_ files also may just be renamed SYS files and therefore may not be compressed.

List of all softwares that can open the Compressed SYS File
Windows
Microsoft Expand

How to fix problems with .SY_ files

  1. You need to update the application that you normally use to open .SY_ files. Only the latest version of the software supports the current .SY_ file format
  2. You need to check the .SY_ file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)