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SY_ File - What is an .sy_ file and how do I open it?

Learn about .SY_ files and view a list of programs that open them.

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Overview

What is an SY_ 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:

More Information expand file.sy_ file.sys NOTE: SY_ files also may just be renamed SYS files and therefore may not be compressed.

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DeveloperMicrosoft
Popularity4.1 | 9 Votes

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In-Depth

.SY_ File Extension

Compressed SYS File

DeveloperMicrosoft
Popularity
4.1  |  9 Votes
 

What is an SY_ 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:

More Information

expand file.sy_ file.sys

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

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Programs that open SY_ files

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Microsoft Expand

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Category: Compressed Files

Updated: December 28, 2011

FAQ

What is an SY_ 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:

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