This error appears if your Internet connection, antivirus software, firewall, or proxy settings are preventing you from installing Office over the Internet. To fix:
Install Office using the offline installer.
Use a wired connection—or try installing from a different location.
Temporarily turnoff proxy settings, antivirus software, or your firewall.
Article ID: 4028184 - Last Review: 1 ኦገስ 2017 - Revision: 1