My version is WINDOWS 8 x86
 Download the latest update for your Windows and install it. 
I've downloaded and installed available recommended updates for Windows XP (273 items in total ... it's been a while!)
Downloaded the Mrketfeeder Pro Fix.
Still unable to login on "Windows XP Professional" laptop
"Unable to send request, 33, code: The operation has been canceled."
Aaaarg! 

What operation is being cancelled? I assume it's the login operation, or is it something else the login procedure relies on?
Why is it being cancelled? ... Who, or what, is doing the cancelling?