I have a user who has office 2010. A lot of the files she tries to open, she gets a message saying that the file is corrupt. If another user tries to open that same file they have no issues. I have tried a reinstall of her office suit, but still getting same issues. I have unchecked protected view settings, and this seems to fix most of the issues. That being said I don't want this to be a long term fix. What is causing office to think files are corrupt?