修复host看看。到木蚂蚁软件园找个mumayi-hosts的软件，恢复初始host状态应该能解决问题。或者打开系统盘windows\system32\driver\etc\hosts ,需要先取消文件隐藏属性。
# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
127.0.0.1 localhost
把你的hosts文件用记事本打开然后复制以上内容代替你原来的全部内容，保存即可。
