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Domain Controller Diagnostics Tool (dcdiag.exe)Applies To: Windows Server 2003 with SP1 What does DCDiag.exe do? This command-line tool analyzes the state of one or all domain controllers in a forest and reports any problems to assist in troubleshooting. DCDiag.exe consists of a variety of tests that can be run individually or as part of a suite to verify domain controller health. Tool location The DCDiag command-line tool is included when you
