INFO: Index Server: Documents That Are Supported by the Office Filter (318326)


The information in this article applies to:

  • Microsoft Index Server 2.0
  • Microsoft Index Server 3.0
This article was previously published under Q318326

SUMMARY

The Microsoft Office filter, Offfilt.dll, does not support all versions of Microsoft Office documents.

MORE INFORMATION

The following versions are supported:

DocumentExtensionsComments
Microsoft Word.doc, .dotOffice 95 and later are supported. This does not include RTF or other formats saved as a .doc file.
Microsoft Excel.xls, .xlt, .xlb, .xltOffice 95 and later are supported.
Microsoft PowerPoint.ppt, .pps, .potOffice 97 and later are supported.
Binder.obdBinder files are not supported. Some earlier versions of the filter registered for this extension but the support never existed.
Thicket.htm, .htmlLimited support exists that is handled by the HTML filter.
Web Archive.mhtThis is not currently supported.


The Office filter looks at the first 4 bytes in the header of each file for a docfile0 signature. To manually check the signature, use a hex editor to open the file to determine whether the signature matches the following one:

D0 CF 11 EO

If this docfile signature does not exist, the file is not filtered by the Office filter. Files that are created in Microsoft Word for Microsoft Windows version 2.0 are an example of the files that do not contain the docfile signature, so they are not filtered. In addition, no error messages are logged when the document is not filtered.
Modification Type:MajorLast Reviewed:10/2/2003
Keywords:kbinfo KB318326 kbAudDeveloper
©2003 Microsoft Corporation. All rights reserved.