I get this problem, when trying to connect to Windows Azure hosted server from my Mac OSX Filezilla FTP Client:
220 Microsoft FTP Service
530 User cannot log inError: Critical error
Error: Could not connect to server
This only started happening as of October 29, 2013. Prior to that, I would get a "Critical error" every now and again, but was always easy to refresh and upload without haste.
I tried CyberDuck and it told me to contact service provider, but has anyone found a solution to this?
We use Windows Azure to host our site, and I run Mac OSX. Surely, this would have always been a problem before and not have just sprung up recently for this reason alone (Windows vs Mac) right?!