Didier Stevens

Monday 23 March 2020

Quickpost: User-Agent: Microsoft Office Excel 2014

Filed under: Networking,Quickpost — Didier Stevens @ 14:25

To start: there is no version 2014 of Microsoft Office.

That’s why I was intrigued when I saw User Agent String “Microsoft Office Excel 2014” appearing in Wireshark when I did some tests with Excel’s data importing features.

With Excel 2019, when I get data from a CSV file and provide an URL (in stead of a local filename) like this:

Excel will issue several OPTIONS and HEAD requests, with different User Agent Strings:

And finally, a GET request to download the file:

Xavier Mertens has mentioned User Agent String “Microsoft Office Excel 2014” in another context: “Microsoft Apps Diverted from Their Main Use“.


Quickpost info


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