How to fix Error 0x80070522: A required privilege is not held by the client in Windows 7

Error 0x80070522: A required privilege is not held by the client

Solution

1. Reboot into Safe Mode.

2. Log on as Administrator.

3. Click Start

4. Type the three letters cmd

5. Press Ctrl+Shift+Enter

6. Run the process as Administrator.

7. Type the following commands and press Enter after each:

    takeown /f d:\ /a /r /d y
    cacls d:\  /t /c /g administrators:F  System:F  everyone:F
    (Answer "yes" when prompted "Are you sure?")

The commands will make you the owner of drive D: and will give full access to everyone to all of its folders.