Free, open-source CMTrace replacement for Windows log files, with Intune and Autopilot ESP diagnostics.
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 timeline and download statistics, Autopilot Enrollment Status Page (ESP) and Device Preparation triage, DSRegCmd analysis for Entra join, hybrid join, PRT, MDM, and Windows Hello for Business, software deployment log scanning, Windows Event Log (.evtx) and Sysmon analysis, Secure Boot certificate checks, and diagnostic evidence collection.
Ships as a single-file executable with no runtime prerequisites; Windows builds are code-signed. CMTrace Open is an independent open-source project and is not affiliated with Microsoft Corporation.
Stable downloads: https://download.cmtraceopen.com/?source=github-release
CMTrace Open v1.5.2
A focused maintenance release based on v1.5.1. This release includes the Windows clipboard-history fix from #520 and the associated test correction from #559, without pulling the later development work from main into the release.
Fixed
Windows clipboard history (#520): Copies made from the Info pane are now registered in Windows clipboard history (Win+V).
Info-pane text selection: Ctrl+C now preserves a selected portion of the message. When no text is selected, it continues to copy the complete log entry.
Clipboard mirror test reliability (#559): Tests now advance the hook’s intentional deferred clipboard write before asserting the plugin call.
Downloads
─────────────┬───────────────────────────────────────────────────────────────────────────────────────
Platform │Downloads
─────────────┼───────────────────────────────────────────────────────────────────────────────────────
Windows x64 │Full portable EXE · Lite portable EXE · MSI installer · NSIS installer
─────────────┼───────────────────────────────────────────────────────────────────────────────────────
Windows ARM64│Full portable EXE · Lite portable EXE · MSI installer · NSIS installer
─────────────┴───────────────────────────────────────────────────────────────────────────────────────
The MSI includes both the Full and Lite editions. Portable EXEs require no installation.
Verification
Clipboard tests: 8 passed
TypeScript check: passed
Signed Windows x64 and ARM64 builds: passed
MSI, portable EXE, installer, signature, and updater metadata artifacts published
Checksums
GitHub displays SHA-256 checksums for each release asset in the asset list.
