Applies to: Exchange Server 2013

Topic Last Modified: 2013-02-12

In Microsoft Exchange Server 2013 and Exchange Online, Exchange Search includes filters for indexing most common types of file formats included as message attachments. You can also install filters to index additional file types.

In Exchange 2013, it isn’t required to install and register Microsoft Office Filter Pack.

When managing or using Exchange Search and the dependent features (such as In-Place eDiscovery), consider the difference between unsearchable items and file formats that are disabled for indexing or contain content that can’t be indexed:

For additional management tasks related to Exchange Search in on-premises organizations, see Exchange Search Procedures.

Default filters

The following table lists the default search filters installed on an Exchange 2013 Mailbox server and in Exchange Online. You can retrieve the list of default filters by using the Get-SearchDocumentFormat cmdlet.

Filter File extension

Email message


Graphics Interchange Format




Microsoft Excel

.xls, .xlt, .xlsx, .xlsm, .xlb, .xlc, .xlsb

Microsoft InfoPath


Microsoft Office Binder

.obt, obd

Microsoft PowerPoint

.pptx, .pptm, .ppt, .ppsx, .ppsm, .pps, .ppam, .potm, .pot, .potx

Microsoft Publisher


Microsoft Word

.doc, .docm, .dotx, .dotm, .dot, .docx

Microsoft XML Paper Specification




OpenDocument Presentation


OpenDocument Spreadsheet


OpenDocument Text


Outlook Item


Portable Document Format


Rich Text









.vdw, .vsd, .vss, .vst, .vsx, .vtx, .vssx, .vssm, .vsdm, .vstx, .vstm, .vdx

Web archive


Web page


XML document


ZIP archive