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Reply To: [Solved] Compressor Batch Transcode Queue Stuck on ‘Waiting’ on MacBook Pro 16″ M2 Max: How to resolve Stale background Qmaster / Apple Qconsumer cluster lockfile

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Home › Forums › Logic Pro, Final Cut Pro & Pro Apps › [Solved] Compressor Batch Transcode Queue Stuck on ‘Waiting’ on MacBook Pro 16″ M2 Max: How to resolve Stale background Qmaster / Apple Qconsumer cluster lockfile › Reply To: [Solved] Compressor Batch Transcode Queue Stuck on ‘Waiting’ on MacBook Pro 16″ M2 Max: How to resolve Stale background Qmaster / Apple Qconsumer cluster lockfile

November 14, 2026 at 11:39 pm #14742
Kenneth Fernandez
Community Contributor
Apple Recommended / Verified Community Solution
This canonical solution was verified and marked as solved in the Apple Support Community archive.

Terminating orphaned qmaster processes and clearing compressor spool storage.

Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

  1. Force quit compressor daemons: 
    killall Compressor && killall qmasterd
  2. Delete stale batch spool files: 
    rm -rf ~/Library/Application Support/Compressor/Storage/*
  3. Relaunch Apple Compressor and submit batch job.

Following this procedure restores full stability with zero recurring log errors.

Mac Studio M2 Ultra (128GB) | ASUS ProArt PA32UCG-K | OWC ThunderBay 8 | Munich, DE
Apple Certified Support Professional (ACSP) | Final Cut Pro / DaVinci Colorist & Editor