参考：http://www.realtime-vista.com/general/2007/04/access_denied_to_documents_and.htm
Access Denied to Documents and Settings
Access
Denied? But I'm an admin you say! You cannot access folders like "Local
Settings", "My Documents" and "Application Data" because in Vista they
are actually located elsewhere. The dim icons with the shortcut links
you see are actually referred to as "Junctions". These junctions are
used by Vista for compatibility but really just redirect programs to
the proper location in Vista. Now it would be helpful if the Windows
File Explorer treated these like shortcuts and took you to the new
location, but instead you get the very intuitive "Not accessible" /
"Access Denied" error, leaving you to think changing permissions may be
a good idea. Don't. Leave them alone and let Vista do it's thing. As a
savvy Vista user, you should go to the new "proper" location and
identify these locations as legacy remnants of days past.
访问拒绝？但我明明是所要求的管理员啊！你无法访问像 "Local
Settings", "My Documents" and "Application Data"这些文件夹，因为在Vista中它们被放置在了其他地方。带有快捷方式标志的灰的图标事实上是称作“汇合点”（Junctions）。这些汇合点是在Vista中用来与之前版本进行兼容的，但实际上是将程序定向到Vista系统中的其他位置。这样，Windows的File Explorer就可以像针对快捷方式一样把你带到新的位置。但是同时你也会遇到像"Not accessible" /
"Access Denied"的错误，使得你琢磨着去改变用户权限。不要！将它们放一边，让Vista做他们自己的事。作为一个聪明的用户，你应该到新的文件夹位置，而将这些旧的文件夹看作是过去的遗物。
So what is what? Here is a quick dump from my system to help illustrate junction points and where they point programs…
那么，哪个文件夹对应哪个文件夹呢。以下是我的系统中的一些收集，用来帮助指出哪些是junction（同时指向哪里）……
Directory of C:/ProgramData
Application Data [C:/ProgramData]
Desktop [C:/Users/Public/Desktop]
Documents [C:/Users/Public/Documents]
Favorites [C:/Users/Public/Favorites]
Start Menu [C:/ProgramData/Microsoft/Windows/Start Menu]
Templates [C:/ProgramData/Microsoft/Windows/Templates]
Directory of C:/Users/Bob Kelly
Application Data [C:/Users/Bob Kelly/AppData/Roaming]
Cookies [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/Cookies]
Local Settings [C:/Users/Bob Kelly/AppData/Local]
My Documents [C:/Users/Bob Kelly/Documents]
NetHood [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/Network Shortcuts]
PrintHood [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/Printer Shortcuts]
Recent [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/Recent]
SendTo [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/SendTo]
Start Menu [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/Start Menu]
Templates [C:/Users/Bob Kelly/AppData/Roaming/Microsoft/Windows/Templates]
Curious about your own particular system? While replacing my name
with your own will likely do the trick, you can see just what your
system thinks of these junction points by opening a command prompt as administrator
and
using the /al switch provided by the DIR command. Navigate you way to
the folder in which you want to look and run "dir /al" or from the root
run "dir /al /s" to dig through all the directories on your system.
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如何在Vista Home家庭版中创建Administrator管理员账户
Vista系统中的拒绝访问（Access Denied to Documents and Settings ）