You might see an error with the message, "Couldn't stream Office" (Error code 30179-25) if your hard drive is running out of space. Free up space on your hard drive and then reinstall Office.
Free up space on your hard drive
To reinstall Office 365 or Office 2016, follow the steps in Download and install or reinstall Office on your PC or Mac.
To reinstall Office 2013, see Download and install or reinstall Office 2013 on a PC.