急！！！我电脑很多软件都用不了，像被拦截了样，但我看防火墙没拦截啊。很多软件不能用但IE网页还能进去

c:/windows/system32/drivers/etc/hosts 用记事本打开

看看和这个是不是一样？

# Copyright (c) 1993-2009 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

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

用360安全卫士或者金山卫士的电脑医生功能，只要点击下鼠标，就解决你这些问题了，不复杂。

朋友可以使用360电脑专家，让电脑专家在线免费给你解决一下。

1. 检查你的网速正常不正常，带宽是不是很低？

2. 关掉你的防火墙试一试

   3.重启电脑和所有的网络设备

朋友你可以用360安全卫士对它进行修复的，系统修复里边的360电脑专家就能解决这类问题的。

可能是DNS污染，网上找一个DNS修复工具