Possivelmente seu documento seja aberto na visualização protegida :
Files from the Internet and from other potentially unsafe locations can contain viruses, worms, or other kinds of malware that can harm your computer. To help protect your computer, files from these potentially unsafe locations are opened in Protected View. By using Protected View, you can read a file and see its contents while reducing the risks.
Protected View is a read-only mode where most editing functions are disabled. There are several reasons why a file opens in Protected View: .........
If you must read the file, and don't have to edit it, you can remain in Protected View. If you know the file is from a trustworthy source, and you want to edit, save, or print the file, you can exit Protected View. After you leave Protected View, it becomes a trusted document.
