OK first off you will be fine with the .SRL drivers.
I would let them install as they should also be the latest ones.
AFAIK they are properly signed too.
I can only use my 101 with the desktop IDE and not at all with the ONLINE editor.
Have become so accustomed to just hitting reset at the very first "Waiting for device..." rather than the lottery of will it wont it.
Adding an attachment to this post too that I developed because I have so many different boards and change IDE's to test etc etc
Maybe it might help ?
CLEAN UP BEFORE INSTALLING ANOTHER COPY OF THE IDE OR ARDUINO CREATE.pdf (345 KB)