File Extension _SY

._SY File

File extension: _SY
File type: Form of SYS File

Notes about the _SY file extension:

To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The _SY file type is primarily associated with 'Form of SYS File'. A normal compressed install SYS file would be named SY_ but some programs and spyware use _SY instead.

Detailed information for file extension _SY:

Primary association: Form of SYS File
Related links: KeyKey 2002 Professional Spyware Info

To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

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