The Windows and Office 2016 updates use the operating system BITS to download the updates.
The passage in the proxy of the firewall and the antivirus scan “prevents” the download and it runs in a loop saturating the tape..
How you can see them also on the following screenshots made with PRTG on the monitoring of firewall interfaces, only the Wan interface (left) is impacted, the Lan interface (right) of the firewall records normal traffic. All download data do not go to the post on your network.
To solve this problem, you must add a proxy control exception to do a bypass on the antivirus scan
officecdn.microsoft.com.edgekey.net officecdn.microsoft.com.edgesuite.net officecdn.microsoft.com
I take this article also to introduce another exception, which is that of url url deploy.static.akamaitechnologies.com. Microsoft also uses this service to offer updates.
1. From the exceptions page, click on the button .