About File Extensions

Visit the File Extension Type website for detailed information on specific file extensions.

This section covers important information related to modifying file name extension settings.

Windows File Extensions:

• How To Modify the Default Action for a File Type
• How To Change the Default Program That Starts When You Double-Click a File with a Particular Extension

Windows XP: File Extension Malfunctions

• Problems While Opening Files with .exe, .com, and .lnk Extensions
• Windows XP Media Center Edition 2005: Files with “.corrupt” or “.recovering” Extensions Appear in the Recorded TV Folder

Windows Vista: File Extensions Malfunctions

• Unable to Extract Contents of MSU
• Fail to Correctly Install a Downloaded Gadget
• Unable to Display .bmp Picture files in the Windows Media Center Picture Library
• Windows Vista Expression Web Always Saves Files With .htm File Name Extension
• Unable to Use Windows Photo Gallery or Windows Explorer to Add Metadata to a Canon RAW File
• Unable to Extract .zip Files