Office 2007 applications such as Word, Excel and PowerPoint save their files with a new XML-based file format called Open Office XML Format. This new format features new and different file extensions (e.g., .docx, .xlsx, .pptx), which help to indicate their XML-based content.
The file format container, which is comprised primarily of XML files, is based upon the compressed ZIP file format specification. The following problems can arise for users:
- Downloading the file from Vista with the default ZIP extension makes the file unreadable by Office 2003
- The default ZIP association forces the client to treat the XML format package as a ZIP file
- The client Office application does not recognize the XML format package encoding
There are two practical solutions:
- Rename the Office 2007 file before (or preferably after) you upload it to Vista. For example, change the .docx filetype of a Word document to .doc.
- Upload the four-character Office 2007 extension, but teach everyone to override the default ZIP filetype when they download and SAVE AS…
- Don't use Office 2007
It would help even more if they didn't have to do it.