How to Run Defrag Without Admin Rights

Written by suvro banerji
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Disk Defragmenter is a built-in Windows utility that is designed to increase access speed by rearranging files stored on your hard disk to occupy contiguous storage locations. Note that disk defragmenter is not designed to run via remote desktop connection. Neither can it be scheduled to automatically defragment a volume without user interaction. The only way a non-administrator can use Disk Defragmenter is by running the "Dfrg.msc" console in the context of a user who has administrator privileges.

Skill level:
Moderately Easy


  1. 1

    Click the Start menu.

  2. 2

    Type "run" (without the quotes) in the search bar at the bottom of the Start menu. Click "Run" from the search results.

  3. 3

    Type "CMD" (without the quotes) in the "Run..." box. Press "Enter" key. This will launch "Command Prompt," an MS-DOS-based command line interface.

  4. 4

    Type the following command and press "Enter" key.

    runas / "mmc dfrg.msc"

    Replace "domain" with the domain name of your company. Replace "company" with the name of your company. Contact your system administrator if you don't know this information.

  5. 5

    Type the administrator password when prompted. This will launch Disk Defragmenter. Click "Defragment" to start the defragmenter.

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