cant open file - access denied


  1. panzerjager
    Posts : 2
    W10
       New #1

    cant open file - access denied


    Hello. Today I did a clean install of W10. Then connected my External HDD and tryed to play some music, but some problem occured (I dont know why). All data stored on this HDD cannot be opened due to missing ownership. So I used script from this website (classic method in OS doesnt work). Everything is fine, but some files getting error. After digging deeper I found out that those files have target like this "\\?\A:**********************" and this causes the problem. They cannot be opened neither set ownership or copied etc.
    See screenshot. Can anybody help me with this?
    cant open file - access denied-bez-nazvu.jpg
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  3. dalchina
    Posts : 43,010
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #2

    For one thing the path length seems excessive- 261 characters?

    Windows: The File Name or Destination Path You Specified is Not Valid or Too Long | IT@Cornell
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  4. spunk
    Posts : 4,804
    Windows 11 Pro 64 Bit 22H2
       New #3

    The other thing is the screenshot you posted the drive letter path to the file is \\?\A: ?
    Press the Windows key +X and choose Disk Management. In the lower pane, what Drive Letter is the External USB HDD? Is it viewable?
    Is the drive healthy? Can you access the drive in File (Windows) Explorer?
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  6. panzerjager
    Posts : 2
    W10
    Thread Starter
       New #4

    spunk said:
    The other thing is the screenshot you posted the drive letter path to the file is \\?\A: ?
    Press the Windows key +X and choose Disk Management. In the lower pane, what Drive Letter is the External USB HDD? Is it viewable?
    Is the drive healthy? Can you access the drive in File (Windows) Explorer?
    I changed the letter by myself instead of "D:":)
    It is normally accessible.
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  7. dalchina
    Posts : 43,010
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #5

    Thank you for your reply?
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  8. Samuria
    Posts : 8,111
    windows 10
       New #6

    If its drive a a floppy disk it wont have same file length as drive d
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  9. pepanee
    Posts : 2,918
    Windows 10 Pro for the Bro
       New #7

    Rename one of the very long filenames to something like: a.mp3

    Like dalchina said, I think it's a very long filename. That happens when a filename (and/or a combination of a long folder structure name) ...is too long.
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  10. garlin
    Posts : 778
    Windows 7
       New #8

    You'll need a different tool than takeown to handle those long paths.

    1. Copy this PowerShell script to Takeown_Over260.ps1
    Code:
    $FolderPath = (Get-Item $args[0]).FullName

# https://rakhesh.com/windows/use-setacl-if-you-want-to-overcome-the-260-character-limit-when-setting-acls-2/

$SetACL = "$PSScriptRoot\SetACL.exe"
$UserName = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name

& $SetACL -on $FolderPath -ot file -actn setowner -ownr "n:$UserName" -rec cont_obj
& $SetACL -on $FolderPath -ot file -actn setprot -op "dacl:np;sacl:np" -rec cont_obj

    2. Download SetACL.exe for Administrators from Helge Klein's website.

    3. Extract the ZIP file, and move SetACL.exe into the same folder as the PS script. It doesn't matter which one from the 32-bit or 64-bit versions of SetACL.exe.

    4. Run the script as Administrator, and provide your top folder's path:
    Code:
    C:\Users\GARLIN\Downloads>powershell -nop -ep bypass -f Takeown_Over260.ps1 C:\Users\GARLIN\Downloads\AUDIO
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\00-armin_van_buuren_-_a_state_of_trance_episode_550.2_live_from_expocenter_in_moscow-russia-(di.fm)-07-03-2012-ps.cue>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\00-armin_van_buuren_-_a_state_of_trance_episode_550.2_live_from_expocenter_in_moscow-russia-(di.fm)-07-03-2012-ps.mp3>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\00-armin_van_buuren_-_a_state_of_trance_episode_550.2_live_from_expocenter_in_moscow-russia-(di.fm)-07-03-2012-ps.nfo>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\short.txt>

SetACL finished successfully.
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\00-armin_van_buuren_-_a_state_of_trance_episode_550.2_live_from_expocenter_in_moscow-russia-(di.fm)-07-03-2012-ps.cue>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\00-armin_van_buuren_-_a_state_of_trance_episode_550.2_live_from_expocenter_in_moscow-russia-(di.fm)-07-03-2012-ps.mp3>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\00-armin_van_buuren_-_a_state_of_trance_episode_550.2_live_from_expocenter_in_moscow-russia-(di.fm)-07-03-2012-ps.nfo>
Processing ACL of: <\\?\C:\Users\GARLIN\Downloads\AUDIO\MuSic\ARMIN_VAN_BUUREN\Armin_van_Buuren_-_A_State_of_Trance_Episode_550.2_Live_from_Expocenter_in_Moscow-Russia-(DI.FM)-07-03-2012-PS\short.txt>

SetACL finished successfully.
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