Ms Word Error Opening File. Instead of trying to open the attachment directly from your e-mail, save the Temporary Internet Files — Removes saved Internet files. So, try opening the file the issue arises with alternative software.
Then you can view and edit the document as required if it opens ok in alternative word processors. If the device's activity light is flashing. Go to "Trust Center" > "Trust Center Settings.".
Apply the changes and hit OK.
After it opens, check if there are any addons or other.
If on the other hand you are trying to open a corrupt Word file, see my comprehensive answer in Quora: How do I open a corrupt Word Docx file. File corruption also occurs when the file is stored on a USB device that's disconnected while it's open in Windows. The above resolutions will probably fix the Word experienced an error issue for.