Assist in the identification of the "account unknown".

Someone please explain why/how "account unknown (S-1-5-21-3921169551-3984760494-1973246975-1003)" is listed as having access permissions on a number of my files and folders?  A standard single user icon, except that this one has a red question mark, it produces.
Thanks in advance. fly

Hello

It is a left on security settings that belongs to an account that has been deleted.

He is not able to recover the account info because it's been deleted, either by you or by Windows, that's why it says "account unknown."

You can try these steps and see if it helps.

a. go to the folder where you saw this string SID.

b. right-click and select Properties. Click the Security tab.

If you do not see the SID, all is well for this folder.

c. If it is there, then click Edit, and then click Remove.

If you are told that you cannot delete this account because it is to be inherited, and then close the dialog boxes and set up a folder in the tree and repeat the procedure. Keep this up until you can remove the SID "Account unknown" in the permissions dialog box.

Hope this information is useful.

Tags: Windows

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