Windows 10: Unknown User as Owner

Discus and support Unknown User as Owner in User Accounts and Family Safety to solve the problem; Hi guys, I have a peculiar issue with an unknown Owner of a folder. To be more precise, its on my external Drive, in a folder called My Backups. I use... Discussion in 'User Accounts and Family Safety' started by witten1972, Sep 5, 2019.

  1. Unknown User as Owner


    Hi guys, I have a peculiar issue with an unknown Owner of a folder.
    To be more precise, its on my external Drive, in a folder called My Backups.
    I use Acronis on a disk to perform backups. Acronis is not installed.
    Path: ‪L:\My backups\Windows 10 Pro (C)
    Owner: S-1-5-21-4052398736-303783888-1690356549-1002


    Unknown User as Owner [​IMG]


    I entered "net users" in cmd.exe & the above account is not listed there.
    I have a built-in Administrator-, Guest-, Default-, WDAGUtility- and my current account.


    Unknown User as Owner [​IMG]


    The above Owner number does not appear in Regedit either.


    Unknown User as Owner [​IMG]


    Nor does it appear in Computer Management --> Local User Groups...

    So who could this be, and is it safe to set it as a member of Administrators?

    Ok, slight change of plans. I was going to post the above when I did a closer inspection of other folders & files in L:\My backups. ‪L:\My backups\Recovery Partition has yet another unfamiliar Owner!


    Unknown User as Owner [​IMG]


    Owners of the 5 backup folders:
    ‪L:\My backups\Data HP (E): Administrators (HP-PAVILION\Administrators)
    ‪L:\My backups\FACTORY_IMAGE (D): Administrators (HP-PAVILION\Administrators)
    ‪L:\My backups\Recovery Partition: S-1-5-21-2524673758-597247510-780583039-1001
    ‪L:\My backups\Windows 7 Pro: S-1-5-21-4052398736-303783888-1690356549-1002
    L:\My backups\Windows 10 Pro (C): S-1-5-21-4052398736-303783888-1690356549-1002

    So I have to ask again, who could this be, and is it safe to set them all as a member of Administrators?

    :)
     
    witten1972, Sep 5, 2019
    #1
  2. Steve_809 Win User

    Unknown User Account created after upgrading to windows 10. It comes back if I delete it.

    Original Title: Unknown User Account

    Hello,

    Since I upgraded to Windows 10 I am seeing an account that I did NOT create. So I deleted it by going into Control Panel > All Control Panel Items > User Accounts > Manage Accounts then I click on the unknown user account and delete it. That said.... It
    comes back. I have also followed the below suggestions from other posts and still does not seem to work.

    Let’s try simple steps and check if the user account is detecting and try removing it.

    • Press Windows key + R, type netplwiz and press Enter.

    • Check if the user account is appearing on the list.

    • Click on user account and click on Remove. (If user account appear on the list).
    Please advise.

    Thank you
     
    Steve_809, Sep 5, 2019
    #2
  3. UNKNOWN USER PROBLEM

    I wrote about this problem long ago, but it became locked up.

    This UNKNOWN user typically comes from an external drive. The computer doesn't recognize the user, therefore UNKNOWN USER.

    Click any folder

    Click Security

    Click Advanced

    Click Change

    Type Everyone

    Click OK

    Click Replace owner on sub-containers and objects. Makes everything the same by permissions.

    Click Apply

    Click OK (notification pops up)

    Click OK to exit

    Click edit

    Click the UNKNOWN USER

    Deny ALL

    Click Remove

    Click Apply

    Click OK to exit

    NO MORE UNKNOWN USER EVER AGAIN ON EXTERNAL DRIVES
     
    MAVERICK HAWK 5, Sep 5, 2019
    #3
  4. Kreij Win User

    Unknown User as Owner

    Current active users that are friends

    The other reason I suggested this is that users can add characters to their username that are not alphanumeric (e.g. user*). This confuses things somewhat when looking at the list.
     
    Kreij, Sep 5, 2019
    #4
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Unknown User as Owner

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