Symptoms
You try to use a command on the ribbon, but the command is disabled or unavailable.
Tip
If your ribbon has disappeared entirely see Show or hide the ribbon in Office.
Possible cause
The file you have opened is rights-managed using Information Rights Management technology and you do not have permission to forward, copy, modify, print, or fax the file. As a result, commands that would otherwise allow you to perform those functions have been disabled.
Other possible causes are:
Commands are disabled by the administrator
The file is in Reduced Functionality Mode
The file opened in Protected View
Resolution
You should contact the owner of the rights-managed file to see if you can be granted less restricted permissions to the file. For more information, see Information Rights Management in Office.