I had the same problem but resolved it by following steps.
Open your CMD and type
ipconfig /flushdns
hit enter
I was so confused when this actually worked. beyond me as i don't know how the connection has anything to do with ui and zip files. but it worked.
What the .... !!! what flushing DNS is related to open ZIP!?!?!?
Really no idea but any way it's work !!!
Thanks