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Available on winget

Install CMTrace Open

Free, open-source CMTrace replacement for Windows log files, with Intune and Autopilot ESP diagnostics.

Install with winget
winget install --id AdamGell.CMTraceOpen
Upgrade
winget upgrade --id AdamGell.CMTraceOpen
Uninstall
winget uninstall --id AdamGell.CMTraceOpen

About CMTrace Open

CMTrace Open is a free, open-source log viewer and Windows troubleshooting tool, built as a modern replacement for Microsoft's CMTrace.exe. It auto-detects and parses ConfigMgr/SCCM (CCM), CBS, DISM, Panther, MSI, PSADT, and plain-text log formats, with severity color coding, real-time tailing, find and filter, and lookup for 700+ embedded Windows, ConfigMgr, and Intune error codes. Beyond the log viewer it adds dedicated troubleshooting workspaces: Intune Management Extension (IME) diagnostics with an event timeli...

What's new in 1.5.1

Stable downloads: https://download.cmtraceopen.com/?source=github-release CMTrace Open v1.5.1 Added - JAMF workspace for macOS investigations. - Company Portal macOS app-log parsing with robust format handling. - Expanded Intune evidence models for package state, platform scripts, and remediations. - Native Recent submenu under File. Changed - Hardened supported log parsers with explicit format contracts. - Improved Intune name-resolution performance and fallback behavior. - Published crates.io metadata for cmtraceopen-parser and cmtrace-open. Fixed - Corrected Intune identity/name scoping and AppId GUID validation behavior. - Redacted IP and MAC data in Company Portal macOS diagnostics. - Kept Microsoft Graph sign-in window in front on Windows. - Prevented parser temp-fixture collisions in concurrent test runs. Build & CI - Added macOS Developer ID signing/notarization configuration. - Added repository-owned Scoop/Homebrew/Winget packaging metadata automation. - Expanded CI/automation coverage (SCCM integration PRs, labeling, CodeRabbit handling). Dependencies - Updated Rust crates and select GitHub Action dependencies. Full Changelog: v1.5.0...v1.5.1

Read release notes

Version history

Version Updated Notes
1.5.1 Unknown Stable downloads: https://download.cmtraceopen.com/?source=github-release CMTrace Open v1.5.1 Added - JAMF workspace for macOS investigations. - Company Portal macOS app-log parsing with robust format handling. - Expande...
1.5.0 Unknown Stable downloads: https://download.cmtraceopen.com/?source=github-release CMTrace Open v1.5.0 Open-source CMTrace log viewer with built-in Intune diagnostics. What's New Added - ESP Diagnostics workspace: Added a dedicat...
1.4.0 Unknown CMTrace Open v1.4.0 A modern, open-source, cross-platform replacement for Microsoft's CMTrace.exe — a log viewer for Windows troubleshooting with built-in Intune (IME) diagnostics, DSRegCmd analysis, and real-time log ta...
1.3.2 Unknown CMTrace Open v1.3.2 Patch release with managed update-check controls and a Secure Boot scan polish fix. Added - Startup update checks are now disabled by default and can be enabled from Settings > Updates. - Managed Wind...
1.3.1 Unknown CMTrace Open v1.3.1 Fixed - CCM entries with type="" or thread="" now parse as structured CCM records instead of falling through to plain text. Empty values default to 0, preserving severity classification and thread dis...
1.3.0 Unknown CMTrace Open v1.3.0 Final 1.3.0 release. This replaces the 2026-04-27 prerelease and includes the final PR #180 hardening plus release-build dependency alignment. Highlights - Unified multi-file timeline workspace with i...
1.2.1 Unknown CMTrace Open 1.2.1 A maintenance release rolling up five community-reported fixes, a ProcMon-style context-menu filter, and signed builds for Windows (x64 + arm64), macOS (arm64), and Linux (x64). Full changelog: CHANGEL...
1.2.0 Unknown What's New in v1.2.0 .cmtlog Format & Interactive Markers - New .cmtlog file format - extends CCM's <![LOG[...]LOG]!> with sections, iterations, WhatIf flags, and tags. Fully backward-compatible with CMTrace.exe. - Color...
1.1.0 Unknown What's New in v1.1.0 New Workspaces - Event Log Viewer — Parse .evtx files or query live Windows Event Log channels. "This Computer" auto-loads Application, System, Security, and Setup in parallel. Event Viewer-style nes...
1.0.2 Unknown CMTrace Open v1.0.2 Open-source CMTrace log viewer with built-in Intune diagnostics. Windows Downloads - Signed standalone EXE (x64) - Signed MSI installer (x64) - Signed standalone EXE (arm64) - Signed MSI installer (ar...
1.0.1 Unknown Fixed - Timestamp display offset: Timestamps from logs written on machines in different timezones (e.g., UTC+8) now display correctly, matching the original CMTrace behavior. Previously, the app converted UTC epoch milli...
1.0.0 Unknown CMTrace Open v1.0.0 First stable release. Since v0.5.0, CMTrace Open has received a complete UX overhaul — eight themes, multi-tab browsing, dynamic parser-aware columns, six new log parsers, a registry file viewer, an e...
0.5.1 Unknown CMTrace Open v0.5.1 Open-source CMTrace log viewer with built-in Intune diagnostics. Downloads ─────────────────────┬───────────────────────────────── Platform │File ─────────────────────┼────────────────────────────────...
0.5.0 Unknown CMTrace Open v0.5.0 Open-source CMTrace log viewer with built-in Intune diagnostics. Windows Downloads - Signed standalone EXE (x64) - Signed MSI installer (x64) - Signed standalone EXE (arm64) - Signed MSI installer (ar...
0.4.0 Unknown Release notes
0.3.0 Unknown Release notes