Windows Search 4 carry out instant search for your computer. It helps to find and preview documents, music files, photos, e-mail messages and other items on the computer. The WS4 installation process automatically upgrades Windows Desktop Search (WDS) 2.6 or later versions of Windows Search technologies.

The search engine in Windows Search 4.0 is a Microsoft Windows service that is also used by programs such as Microsoft Office Outlook 2007 and Microsoft Office OneNote 2007. You can use this search engine to index a program’s content and to obtain instant results when you search in a particular program.

Windows Search 4.0 includes the following improvements:

• Support for client-to-client remote query to shared indexed locations
• Windows software updates for Watson errors
• |Support for the Encrypting File System (EFS)
• Reduced affect on Microsoft Exchange when you index e-mail in online mode, and there is no local cache (.ost)
• Improved indexing performance
• Faster previewed updates for Windows XP
• Per-user Group Policy settings
• Support for indexing online delegate mailboxes

Upgrade Windows Search 4.0 Beta here