Steam has annoying and useless “steamwebhelper.exe” running along with normal steam client. Here is how to disable that crap.

Browse into directory of:

<steamPath>\bin\cef\cef.win7x64

RMB click steamwebhelper.exe → properties → security → advanced → change permissions → edit → traverse folder / execute file DENY.

Then click ok, apply and million other ok buttons.

Now when you launch steam client the next time it wont start up “steamwebhelper.exe” anymore. If steam client updates itself it might overwrite the execute file DENY rule, so you may or may not have to do this every time there is steam client update.