Recently, we’ve heard that our customers encounter high network traffic since they large-scalely deploy Office 365/2013 within the domain/site. Does this behavior relate to the new Office? Or does Office 365/2013 cost more network resources in this case?
To troubleshoot this, we consider to analyze what happened during the process by Network Monitor tool.
Start a new capture first and launch Office Word 2013, get the following things as the screenshots:
According to the information above, in addition to the network authentication flow, we could notice that the Word.exe would download a lot of PNG files from the link “/en-us/templates”. What about those PNG files?
Let us try to directly visit them via IE:
http://office.microsoft.com/en-us/templates/TM103463086.png?ts=AOLhIeGIzwg
Beyond question, they are the thumbnails of the Office template which are downloaded while the Office application starts by default.