I was helping a user out today who had issues opening a .doc Word file in MS Word 2007. The user was getting the following error.
“You are attempting to open a file that was created in an earlier version of Microsoft Office. This file type is blocked from opening in this version by your registry policy setting.”
It appears the document he was opening was probably created in a very old version (pre-97) of Word, so the standard Compatability Mode in Word 2007 wasn’t picking it up. The easiest way to allow these older .doc files to open in Word 2007 is to follow the steps below. If you are new to editing the registry, you may want to back it up first. You should also make sure that any Office applications are closed before starting this process.