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Reply To: [Solved] Rosetta 2 Translation Failure: ‘oahd: dyld shared cache architecture mismatch’ on macOS Sequoia 15.0: Diagnostic steps and permanent fix

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Home › Forums › Apple Silicon, Terminal & Developer Tools › [Solved] Rosetta 2 Translation Failure: ‘oahd: dyld shared cache architecture mismatch’ on macOS Sequoia 15.0: Diagnostic steps and permanent fix › Reply To: [Solved] Rosetta 2 Translation Failure: ‘oahd: dyld shared cache architecture mismatch’ on macOS Sequoia 15.0: Diagnostic steps and permanent fix

November 15, 2026 at 5:35 am #20584
Linda Alexander
Community Contributor
Apple Recommended / Verified Community Solution
This canonical solution was verified and marked as solved in the Apple Support Community archive.

Reinstalling Rosetta 2 runtime daemon and rebuilding LaunchServices database.

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

  1. Force reinstall Rosetta 2: 
    softwareupdate --install-rosetta --agree-to-license
  2. Reset LaunchServices database: 
    /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user
  3. Kill daemon to rebuild fresh cache: 
    sudo killall -9 oahd

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

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