方法
首先打开steam文件夹
找到appcache文件夹这个文件夹删掉
然后重启电脑重新登入steam
如果第一个问题方法试过却依然提示steam错误代码2那么，需要重新下载steam软件然后打开hosts输入以下内容：
# 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
建议大家在更改hosts文件之前备份之前
然后按住键盘上的win+r
在输入框中输入“cmd”，回车或者点击“确定”
输入ping 184.30.226.234然后在输入23.37.147.226，这两个IP分别为steam商店IP另外一个为steam社区IP，如果这两个能拼通却提示steam错误代码2那就说明是LSP的问题，把LSP恢复默认即可
找到LSP修复工具进行手动修复即可，也可以利用命令符进行修复，可以参考103的解决方案
如果还不行，可以尝试更改DNS，如果你的DNS遭到了当地运营商的，也是会显示错误代码2的。当你做完这些重启就可以了
做完以上步骤的操作吗，重新进入steam你就会发现没有问题了
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