Read ConfigMgr & Intune Logs in Your Browser with CMTrace.dev

The Problem

Reading client logs still means installing CMTrace on every machine — or copying the files off the device first. And the moment an execmgr.log or IME log grows past a few hundred thousand lines, the classic viewer crawls. For something we do every single day, that’s a lot of friction.

Our Answer

CMTrace.dev opens any ConfigMgr, SCCM or Intune (IME) log right in your browser — 100% client-side, with nothing ever uploaded. No install, no account, no waiting.

How to Use It

Go to cmtrace.dev (or install it as a PWA for offline use).
Drag and drop your log file — it accepts .log, .lo_, .txt, plus .gz and .zip archives.
Let the parser figure out the format. It reads the CMTrace format, legacy SCCM/ConfigMgr logs and plain text automatically.
Use the ConfigMgr and Intune (IME) presets to jump straight to the right logs.
Search, filter by severity, and highlight matches as you scroll. Errors and warnings are color-coded so failures jump off the screen.

The grid is virtualized, so it stays smooth even at 1M+ lines — only the visible rows are rendered.

The Real Power Move: Git-Style Compare

Drop in two logs — a good run and a failing one — and CMTrace.dev lines them up like a git diff. Added, removed and changed lines are highlighted, and you can jump straight to the first divergence. The one change that broke a deployment becomes impossible to miss.

Why This Matters

Zero install, zero upload — safe for sensitive ConfigMgr and Intune logs, since everything is parsed locally on your device.
Works on any OS, any machine — share a link, not an installer. Perfect for demos and remote troubleshooting.
No more Googling error codes — Win32, HRESULT and SCCM codes are decoded in place, with one-click links to Microsoft Learn.
A severity minimap and timeline surface error clusters and the moments that actually matter.

Pro Tip

Install CMTrace.dev as a Progressive Web App straight from your browser. It then works fully offline — just like a desktop tool, but with dark mode and no network connection required. Combine that with live tail to follow logs in real time during a deployment.

Try It Now

Open your next log without installing anything: cmtrace.dev →

It’s free, forever and you can explore a sample log before you even drop in your own.

CMTrace.dev is an independent open project and is not affiliated with or endorsed by Microsoft. CMTrace is a Microsoft tool and trademark; this is a browser-based reimplementation of that workflow.