Searching in the Vault is a powerful tool, it allows you to search for specific property information (such as title, author, descriptions & material) and file contents (text in a file). When a file gets checked into Vault the property extraction process automatically starts. In order to search for the file contents of a file you must have the Content Indexing Service enabled through the Autodesk Data Management Server Console, and have Windows Indexing Service installed from the Windows Components Wizard.
Software applications that index properties use plug-ins called iFilters which enable the Windows Indexing Service to extract property information which makes the properties searchable.
In the past when users are still on an old version of Vault there have been some issues when trying to search the content of files with the new office 2010 file extensions which include the ".X".
Microsoft has released an iFilter Pack that you can download and install:
The Microsoft Filter Pack is a single point-of-distribution for Office IFilters. IFilters are components that allow search services to index content of specific file types, letting you search for content in those files. They are intended for use with Microsoft Search Services (Sharepoint, SQL, Exchange, Windows Search).
Install this product if you want to search for content in the file types listed below.
The Filter Pack includes:
Legacy Office Filter (97-2003; .doc, .ppt, .xls)
Metro Office Filter (2007; .docx, .pptx, .xlsx)
Open Document Format Filter
So if you’re not on the latest version of Vault 2012 or 2013 you can install the new iFilters and be on your way to searching the file contents of your new Office 2010 documents.