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安装CAD2010失败提示“错误1606。无法访问网络位置setup”，（如下图所示），无论如何卸载重装重启都是有问题，不要担心，下面直接参考教程设置即可。
解决办法：断网安装
第一步，拔掉网线，或者关闭无线开关，只要一个断网环境。
第二步，进入注册表（regedit）找到[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders]下的Common Startup， 将其值“%allusersprofile%\start menu\programs\startup ”替换为C:\Documents and Settings\All Users\ start menu\programs\startup
第三步，重启系统后即可正常安装cad2010。
如果你觉得上述修改注册表的解决方法有难度，这里提供了简便的办法。
先关闭360等程序。win7系统安装CAD出现错误代码1606的时，在桌面右击新建——文档文本(有的叫记事本）把下面代码写进去，再另存为
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"!Do not use this registry key"="Use the SHGetFolderPath or SHGetKnownFolderPath function instead"
"AppData"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,00,00
"Cache"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,\
00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,4c,00,\
6f,00,63,00,61,00,6c,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,00,6f,00,66,\
00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,54,00,65,00,\
6d,00,70,00,6f,00,72,00,61,00,72,00,79,00,20,00,49,00,6e,00,74,00,65,00,72,\
00,6e,00,65,00,74,00,20,00,46,00,69,00,6c,00,65,00,73,00,00,00
"Cookies"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,\
73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,\
00,43,00,6f,00,6f,00,6b,00,69,00,65,00,73,00,00,00
"Desktop"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,44,00,65,00,73,00,6b,00,74,00,6f,00,70,00,00,00
"Favorites"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,46,00,61,00,76,00,6f,00,72,00,69,00,74,00,65,00,73,\
00,00,00
"History"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,4c,\
00,6f,00,63,00,61,00,6c,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,00,6f,00,\
66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,48,00,69,\
00,73,00,74,00,6f,00,72,00,79,00,00,00
"Local AppData"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,\
49,00,4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,\
00,4c,00,6f,00,63,00,61,00,6c,00,00,00
"My Pictures"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,\
00,4c,00,45,00,25,00,5c,00,50,00,69,00,63,00,74,00,75,00,72,00,65,00,73,00,\
00,00
"My Music"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,4d,00,75,00,73,00,69,00,63,00,00,00
"My Video"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,56,00,69,00,64,00,65,00,6f,00,73,00,00,00
"{374DE290-123F-4565-9164-39C4925E467B}"=hex(2):25,00,55,00,53,00,45,00,52,00,\
50,00,52,00,4f,00,46,00,49,00,4c,00,45,00,25,00,5c,00,44,00,6f,00,77,00,6e,\
00,6c,00,6f,00,61,00,64,00,73,00,00,00
"NetHood"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,\
73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,\
00,4e,00,65,00,74,00,77,00,6f,00,72,00,6b,00,20,00,53,00,68,00,6f,00,72,00,\
74,00,63,00,75,00,74,00,73,00,00,00
"Personal"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,44,00,6f,00,63,00,75,00,6d,00,65,00,6e,00,74,00,73,\
00,00,00
"PrintHood"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,\
73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,\
00,50,00,72,00,69,00,6e,00,74,00,65,00,72,00,20,00,53,00,68,00,6f,00,72,00,\
74,00,63,00,75,00,74,00,73,00,00,00
"Programs"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,\
73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,\
00,53,00,74,00,61,00,72,00,74,00,20,00,4d,00,65,00,6e,00,75,00,5c,00,50,00,\
72,00,6f,00,67,00,72,00,61,00,6d,00,73,00,00,00
"Recent"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,\
00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,00,\
6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,\
00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,\
52,00,65,00,63,00,65,00,6e,00,74,00,00,00
"SendTo"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,\
00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,00,\
6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,\
00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,\
53,00,65,00,6e,00,64,00,54,00,6f,00,00,00
"Start Menu"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,\
00,4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,\
52,00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,\
00,73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,\
5c,00,53,00,74,00,61,00,72,00,74,00,20,00,4d,00,65,00,6e,00,75,00,00,00
"Startup"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,\
73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,\
00,53,00,74,00,61,00,72,00,74,00,20,00,4d,00,65,00,6e,00,75,00,5c,00,50,00,\
72,00,6f,00,67,00,72,00,61,00,6d,00,73,00,5c,00,53,00,74,00,61,00,72,00,74,\
00,75,00,70,00,00,00
"Templates"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,\
4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,\
00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,\
73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,\
00,54,00,65,00,6d,00,70,00,6c,00,61,00,74,00,65,00,73,00,00,00
"CD Burning"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,\
00,4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,\
4c,00,6f,00,63,00,61,00,6c,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,00,6f,\
00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,42,00,\
75,00,72,00,6e,00,5c,00,42,00,75,00,72,00,6e,00,00,00
"Fonts"=hex(2):25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,00,5c,00,46,00,6f,\
00,6e,00,74,00,73,00,00,00
