The preview is successful only when the network is disconnected

When mac book pro is connected to the Internet, The preview loads the name of the pages on the left, but the screens are blank.
When mac turns off the network, Preview all OK.
Whether it’s safari or chrome.
hosts no problem, 127.0.0.1 and localhosts all it is works.
No fire works and proxy and things like Karpasky
Axure ver is 9.0.0.3722
Please help me~~