“By default Office 2010 will open documents in protected mode that fail validation, have been downloaded from the internet, are located in potentially unsafe location and include attachments. Protected view opens the document in read-only mode thus minimizing the exposure to some potential security threat.
If you are an experienced user who is annoyed by the protected view, you can always disable it even though it is not recommended by Microsoft.
Please refer the following steps as how to disable the protected mode in Office 2010:
-Run one of the Microsoft Office 2010 applications (e.g. Word 2010/Excel 2010/PowerPoint 2010).
-Click on Office button, and select Options.
-In the “Options” dialog, select Trust Center in the left pane.
-Click on Trust Center Settings in the right pane.
-Select Protected View in the left pane of “Trust Center” dialog.
-Disable any of all of the protected mode options as below by clicking the check boxes:
-Click OK.
If you have any queries/questions regarding the above mentioned info then please let me know,Thanks..