When attempting to save a decrypted .docx file or any other Office 2007 file after editing it on a portable device, the save operation stops with an exception, the message displayed will be similar to this:
Word cannot complete the save due to a file permission error. (E:\x.docx )
SafeGuard Enterprise Data Exchange
All supported Operating Systems
What to do
To avoid this issue, you must adjust the filter driver of SafeGuard Enterprise. On an affected computer please import or create the following registry key.
This can be used to enable MS Word and Excel. Please add any other executable of Microsoft Office applications to this key if issues are encountered (Power Point, Publisher etc.)
This issue results from changes Microsoft has made to the internal process of saving files.