I have the same problem with an important, but corrupt, docx file. I followed the instructions to add a ZIP extenstion to the file and tried to extract the document.xml file to correct it, but I ran into the error 0x80004005 "unspecified error" while trying to
copy it out of the ZIP folder. I've uploaded the corrupt Word document to the site: http://www.sendspace.com/file/g8bxxc. Any help is greatly appreciated.
Thanks
I'm afraid this error can't be fixed as it indicates that something went wrong during the archiving process (generating the zip file). Two files are corrupt: the main document and the rel file. While the rel file can be probably be reconstructed given the
layout of the rest of the archive, the main document contains what you typed as text and therefore can't be derived from anything else.
So I'm sorry, but I doubt anyone will be able to help you. The only thing you can do is look for a decompressor which is able to repair damaged zip archives. But I doubt you will find any. I tried to run your file through WinRAR and 7-zip and both complained
about errors.
Note that by renaming the file to a zip archive, you will be able to extract your diagrams and images. Probably less than what you hoped for, but it is all you can get.
This thread handles about a totally different type of error. It is errors in the open xml data structure of documents. The tricks/information described here is only useful if the details of the error look like: "The name in the end tag of the element must
match the element type in the start tag" followed by a set of coordinates.