SE

SetupDiag

SetupDiag is a Microsoft diagnostic tool that analyzes Windows Setup log files to identify the root cause of upgrade failures. It is included with Windows Setup in supported versions and available for manual download.[1]
Latest: 1.7.0.0
Last checked: Feb 27, 2026 4:53am
Rank: 9226/15140
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Overview

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License: Free (Microsoft)Installer: Portable EXEWinget: Available

Version & Lifecycle

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Current: 1.7.0.0 Avg cadence: As needed for Windows versions

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  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

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SetupDiag

Packaging Notes

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Portable diagnostic tool, no installation required. Included in Windows Setup for version 2004 and later.[1][4]

Notes

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Run from elevated command prompt, e.g., SetupDiag.exe /Output:C:\SetupDiag\Results.log. Requires .NET Framework 4.6 or later.[2][3]