Windows 8 and 8.1 Forums

System files accidentally locked

  1. #1

    Posts : 1
    Windows 8

    System files accidentally locked

    I have a strange problem.
    My son was experimenting with system security and managed to lock up system files.
    From what I can tell, he went into Properties on the top level C: drive. He went to Security, and individually selected each user besides Administrator (including SYSTEM). He picked Deny for all of them and Applied the changes.

    If I try to get to the top level C: drive, I get C:\ Access is Denied. Most things do still run, but I'm not sure what problems it may be causing. One odd thing I've seen is that I can launch cmd from C:\windows\system32. If I try running cmd as Administrator, I get an error that the file does not exist.

    Since the admin commands won't run, I don't know what to do next.

    Any suggestions would be great. Thanks!

      My System SpecsSystem Spec

  2. #2

    Posts : 98
    Windows 8 Pro

    Do you have System Restore turned on? Give that a try. If you get Denied, try booting from a rescue disk or Windows 8 install media and try System Restore from there.

    Maybe try to Refresh your system?

    Refresh Windows 8

    If you know how to reverse what you son did, you can enable the built-in administrator account. I believe if you use that account, you will not get denied access. I think you will need option 2 to enable it. After it's enabled, and if System Restore is turned on, use that account to restore it. It's best to disable the account when you are finished.

    Built-in Administrator Account - Enable or Disable in Windows 8
    Last edited by TrustMe; 3 Weeks Ago at 00:15.
      My System SpecsSystem Spec

  3. #3

    Austin TX metro area
    Posts : 518
    Windows 7 Pro 64bit [MS blue-disk set]

    If every solution fails, as a last resort, you might have to do a reinstall, however, I think that's unlikely. Do you have your data partition, data folders and files backed up onto available and trusted external media?
      My System SpecsSystem Spec

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