Windows 7， 8用戶在訪問ProgramData目錄和Documents and Settings目錄時，會無法打開並被提示“C:\xxxx is not accessible. Access is denied.”因為權限不足而被拒絕訪問。這是因為在Windows Vista以後的Windows操作系統中，默認的應用程序數據位置相對於使用廣泛的Windows XP已經被修改了，而這幾個目錄之所以存在時為了兼容還試圖訪問它們的老程序。
它涉及了Documents and Settings和ProgramData下的所有文件，其中包括配置目錄，緩存目錄等等。
你完全不需要去使用某些工具或命令來獲取這些目錄的訪問權限，因為我們可以很方便地去它們對應的路徑來訪問它們。
只是換了個位置
在Windows XP下默認保存用戶數據（我的文檔，我的音樂等）和應用程序配置，應用程序數據（Local Settings，Application Data等）被放在“Documents and Settings”目錄下，自Windows Vista開始，包括Windows 7，Windows 8， Windows 8.1 以及還未正式發布的Windows 10，微軟對這個目錄結構左右一定的優化（簡化目錄名稱並去除空格，減小目錄深度，調整部分內容的劃分方式），使之更加易用和合理。
大體上，是講它們轉移到了C:\User目錄下。我在後面會給出完整的列表。
可能比較常用的是：
C:\Documents and Settings\ username \Local Settings\ 變為 C:\Users\ username\AppData\Local\ C:\Documents and Settings\ username \Application Data\ 變為 C:\Users\username \AppData\Roaming\
站在開發者的角度上“數據”和“配置”的劃分有時候會比較模糊，但是變為“本地數據”和“可漫游數據”就好理解的多了。簡單的說：假設一個有網絡同步功能的RPG游戲，我分別在兩台配置不同的機器上玩，不同機器我配置了不同的畫面特效級別，它們就是只作用於本地的配置文件，而我的游戲進度則是應該漫游在各個機器上的數據。
權限
為了兼容性考慮，微軟還保留了名為ProgramData，Documents and Settings等的幾個Junction Point（類似Linux的硬鏈接，沒有接觸過這個概念的朋友就當做是快捷方式好了），但是由於目錄的替換是完整的一一映射（用戶可以按照新方式找到所有文件），而且從微軟的角度也不希望用戶在去使用舊的劃分方式，所以微軟將默認情況下將它們的read權限設置為Everyone - Deny.
想看完整的Junction Point列表嗎？用管理員權限打開一個cmd，在系統盤輸入 dir /aL /s 。
完整對應表
Parent folder junction requirements:
Directory junction creation location |
Destination |
..\Documents and Settings\
..\Users\
User data legacy folder junction requirements:
Directory junction creation location |
Destination |
..\Documents and Settings\username\My Documents
..\Users\username\Documents
..\Documents and Settings\username\My Documents\My Music
..\Users\username\Music
..\Documents and Settings\username\My Documents\My Pictures
..\Users\username\Pictures
..\Documents and Settings\username\My Documents\My Videos
..\Users\username\Videos
Per-user Application Data legacy folder junction requirements:
Directory junction creation location |
Destination |
..\Documents and Settings\username\Local Settings\
..\Users\username\AppData\Local
..\Documents and Settings\username\Local Settings\Application Data
..\Users\username\AppData\Local
..\Documents and Settings\username\Local Settings\Temporary Internet Files
..\Users\username\AppData\Local\Microsoft\Windows\Temporary Internet Files
..\Documents and Settings\username\Local Settings\History
..\Users\username\AppData\Local\Microsoft\Windows\History
..\Documents and Settings\username\Application Data\
..\Users\username\AppData\Roaming
Per-user OS settings legacy folder junction requirements:
Directory junction creation location |
Destination |
..\Documents and Settings\username\Cookies\
..\Roaming\Microsoft\Windows\Cookies
..\Documents and Settings\username\Recent
..\Roaming\Microsoft\Windows\Recent
..\Documents and Settings\username\Nethood\
..\Roaming\Microsoft\Windows\Network Shortcuts
..\Documents and Settings\username\Printhood\
..\Roaming\Microsoft\Windows\Printer Shortcuts
..\Documents and Settings\username\SendTo\
..\Roaming\Microsoft\Windows\Send To
..\Documents and Settings\username\StartMenu\
..\Roaming\Microsoft\Windows\StartMenu
..\Documents and Settings\username\Templates\
..\Roaming\Microsoft\Windows\Templates
Legacy profile folders where junctions are not required:
Legacy location |
Reasoning |
..\Documents and Settings\username\Desktop
Covered by the junction at Documents and Settings
..\Documents and Settings\username\Favorites
Covered by the junction at Documents and Settings
..\Documents and Settings\username\Local Settings\Temp
Covered by the junction for the Local Settings folder to Local
All Users legacy folder junction requirements:
Sym links creation location |
Destination |
..\Users\All Users
..\ProgramData
User junction points:
Directory junction creation location |
Destination |
..\ProgramData\Desktop
..\Users\Public\Desktop
..\ProgramData\Documents
..\Users\Public\Documents
..\ProgramData\Favorites
..\Users\Public\Favorites
..\Users\Public\Documents\My Music
..\Users\Public\Music
..\Users\Public\Documents\My Pictures
..\Users\Public\Pictures
..\Users\Public\Documents\My Videos
..\Users\Public\Videos
..\ProgramData\Application Data\
..\ProgramData
..\ProgramData\Start Menu\
..\ProgramData\Microsoft\Windows\StartMenu
..\ProgramData\Templates\
..\ProgramData\Microsoft\Windows\Templates
Default User legacy folder junction requirements:
Directory junction creation location |
Destination |
..\Documents and Settings\Default User
..\Users\Default
..\Documents and Settings\Default User\Desktop
..\Users\Default\Desktop
..\Documents and Settings\Default User\My Documents
..\Users\Default\Documents
..\Documents and Settings\Default User\Favorites
..\Users\Default\Favorites
..\Documents and Settings\Default User\My Documents\My Music
..\Users\Default\Music
..\Documents and Settings\Default User\My Documents\My Pictures
..\Users\Default\Pictures
..\Documents and Settings\Default User\My Documents\My Videos
..\Users\Default\Videos
..\Documents and Settings\Default User\Application Data\
..\Users\Default\AppData\Roaming
..\Documents and Settings\Default Users\Start Menu\
..\Users\Default\AppData\Roaming\Microsoft\Windows\StartMenu
..\Documents and Settings\Default User\Templates\
..\Users\Default\AppData\Roaming\Microsoft\Windows\Templates
Program Files junction points:
Directory junction creation location |
Destination |
..\Program Files (Localized name)
..\Program Files
..\Program Files\Common Files (Localized Name)
..\Program Files\Local Files
