iMovie Library Won't Open or Is Corrupted

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Workaround available macOS Updated November 14, 2026Based on 3 user reportsHow we research

Quick answer

A library that will not open can be tested by opening or creating another library. Restore from Time Machine or an iMovie backup if needed.

Most likely fix: Pick the library manually

How to fix it

Try these in order — the most common fix is first.

  1. 1. Pick the library manually

    1. Hold Option while launching iMovie
    2. Choose Other Library and select your library
    Did this fix it?
  2. 2. Reset preferences

    1. Hold Option and Command while launching
    2. Choose delete preferences
    3. Reopen the old library
    Did this fix it?
  3. 3. Restore a backup

    1. Check Time Machine for the library
    2. Look in the iMovieBackups folder in your user Library cache
    Did this fix it?

Symptoms

iMovie opens blank, errors out or the library will not load.

Why it happens

  • Damaged library package
  • Interrupted export or crash
  • Corrupt preferences

This guide also covers

  • imovie library corrupted
  • imovie won't open project

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