Disable protected mode (Office 2010)
Q. I'm getting an error when opening Word or Excel 2010 files "Protected View: This file originated from <blank> and might be unsafe". How do I get rid of it?
A. You need to disable protected mode. To do that, follow these steps:
1. Open MS Word 2010 and go to File → Options
2. When Word Options dialog comes up, click on Trust Center and then on Trust Center Settings.
3. In the Trust Center, add the required trusted location (eg. C:\MyFolder)
Chances are, you are not trying to add a local drive path, but rather a network drive. This may be a bit of a problem. If you can, mount your drive using a server name, rather than IP (eg. \\server1\share). If you can't , you'll have to uncheck "Enable protected View for files originating from the Internet" under Protected View and not bother with trusted locations at all.
In its traditional fashion, Microsoft decided to enable extra security. I guess they've put their heads together and decided that nobody mounts shared drives by IP anymore, so there's no way for you to add IP-mounted drive as a trusted source. What is the result of this new feature? People end up disabling it.