Error messages when taking ownership or changing permissions in C:\


  1. letterwhy
    Posts : 4
    Windows 10 Home Single Language 64-bit
       New #1

    Error messages when taking ownership or changing permissions in C:\


    I created a Guest account in Windows 10 and I wanted to restrict its access to my other drives/partitions. I managed to do it for my other drives via security/permission settings, but I'm encountering a bunch of error messages such as "failed to enumerate objects" or "file in use" when I do it on my c:\ (system) drive.

    I've tried taking ownership of c:\ and giving my Admin account full control but when I do it gives me the same error messages (example of files that give me this error message are hiberfil.sys, bootmgr, programdata folder, system32 folder, avast, etc.)

    My OS becomes unstable after this such as I can't use the search bar, start button not working, etc. Luckily I've created images and restore points before attempting any of this so I was able to revert everything back to normal during my numerous failed attempts.

    I've read an old post in the forum with the same issue here: I have broken W 10 by trying to take ownership of C:\ please help! - Windows 10 Forums

    Can anybody point me in the right direction on how I can properly do this? Or is it even advisable to try to change permissions or take ownership of c:\?

    Supporting details regarding my problem:

    OS: Windows 10 Home Edition (NO GROUP POLICY EDITOR)
    Drives:
    C - System (should only be available to Admin user)
    D - Backup (should only be available to Admin user)
    E - Data (available to Admin and Standard user, not available to Guest user)
    F - Visitor (available to Admin and Guest user, not available to Standard user)
    Users:
    Administrator
    Standard User
    Guest

    Thanks in advance!
      My Computer
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  3. Samuria
    Posts : 8,101
    windows 10
       New #2

    Many folders and files on c are owned by system changing any of them can make your PC into a brick a lot will be stopped by system anyway
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  4. TairikuOkami
    Posts : 5,452
    Windows 11 Home
       New #3

    Use this to reset permissions:
    Code:
    icacls C:\* /T  /L  /Q /C /RESET

    letterwhy said:
    C - System (should only be available to Admin user)
    You do not need to take ownership for this, just keep System and Administrators and remove the rest.
    Error messages when taking ownership or changing permissions in C: Attached Images Error messages when taking ownership or changing permissions in C:\-capture_07252017_132422.jpg 
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  6. kreemoweet
    Posts : 67
    Win10 Home 64-bit, MX-Linux
       New #4

    C:\ is the system drive, and ALL users need access to it. The permissions are already set correctly for it on install, and you
    should not be messing with them. Administrators already have full control on C:\, by default. If you want restricted-access
    folders under C:\, then just create them and set appropriate permissions on them.
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