Here is step by step what I did with IronPortable incognito and it worked:
http://www.srware.net/en/software_srwar ... wnload.php
Download Portable-Version for USB-Sticks (no Installation; no Admin-rights needed; Profils in the same folder)
Extract the contents of the zip to a folder (.\IronPortable)
In the folder, you can create a batch file or a Shortcut, but in general they are doing the same thing. I prefer the batch file because the shortcut needs paths.
Place the following line into a text file and save it as ironstart.bat:
@cmd /c IronPortable.exe --incognito
I am behind a corporate firewall/proxy, so my line is actually:
@cmd /c IronPortable.exe --incognito --no-sandbox
The --no-sandbox is necessary for me for some reason. Noone seems to know why - but that's off topic.
Note that I use two dashes in front of the word incognito. I read it somewhere when I needed the no-sandbox option to make it work. So I use two dashes. I don't know if it matters, I've read about people using one dash and it works, but I'm not changing a thing if it's working.
I hope that helps!