After running successfully for some weeks on my Windows 10 machine AWB has now stopped with an error message of "Operation 'login' ended with result 'NeedToken'.
Xml: '<?xml version="1.0"?><api><warnings><login xml:space="preserve">Fetching a token via action=login is deprecated. Use action=query&meta=tokens&type=login"
Frankly to me this message is as meaningless as a hexdump
Extensive end user efforts ie "switching it on and off again" and even "swearing at the machine" have not fixed the problem.