DcDiag.exe: Domain Controller Diagnostic Tool

Analyzes the state of domain controllers in a forest or enterprise to assist in troublshooting.
  • Version:


    File Name:


    Date Published:


    File Size:

    283 KB

      DCDiag is command-line tool which analyzes the state of domain controllers in a forest or enterprise and reports any problems to assist in troubleshooting. As an end-user reporting program, DCDiag encapsulates detailed knowledge of how to identify abnormal behavior in the system.

  • Supported Operating System

    Windows 2000, Windows XP

      You can download and use Sonar.exe on any of the following platforms:

      Windows 2000 Professional
      Windows 2000 Server
      Windows 2000 Advanced Server
      Windows 2000 Datacenter
      Windows XP Professional
    • 1. Click the link, DcDiag_setup.exe.
      2. In the File Download dialog box, select Save this program to disk.
      3. Select a location on your computer to save the file, and then click Save.
      4. In Windows Explorer, go to the location where you saved the downloaded file, double-click the file to start the installation process, and then follow the instructions.
      The downloaded file is a self-extracting executable (.exe) file. By running the file, you install the tool and documentation on your computer.

      When you install a tool, you are prompted to choose an install directory. If the Windows 2000 Resource Kit is installed, install the tool in the Resource Kit directory to avoid an overly large system path and to ensure more reliable upgrades. When you install the Resource Kit, the recommended directory is C:\Program Files\Resource Kit.