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

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

November 14, 2026 at 10:37 pm #13658
Sean Ward
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.

MacBook Pro 16″ M3 Max (48GB) | RME Babyface Pro FS | Genelec 8330A | Minneapolis, MN
Apple Certified Support Professional (ACSP) | Logic Pro Audio Producer & Mixing Engineer