Mac Error 69874 APFS Snapshot Delete Failed — What It Means & How to Fix It

Fix macOS error 69874 when APFS snapshot deletion fails, preventing disk space from being reclaimed after system updates. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Error 69874 indicates macOS cannot delete an APFS snapshot, often because it is still in use or protected. APFS snapshots are created automatically by Time Machine and macOS updates for rollback purposes. Stuck snapshots can consume significant disk space that shows as 'purgeable' or 'other' in storage. This error commonly appears after interrupted macOS upgrades or Time Machine backup failures. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Snapshot is referenced by an active Time Machine backup process. macOS update snapshot is preserved for rollback and protected from deletion. APFS volume structure has minor inconsistencies preventing snapshot operations. Insufficient permissions to delete system-level snapshots. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: List all snapshots: tmutil listlocalsnapshots / in Terminal. Delete specific snapshots: sudo tmutil deletelocalsnapshots <date> for each snapshot. If snapshots resist deletion, boot into Recovery Mode and run Disk Utility First Aid on the volume. Delete all local snapshots at once: sudo tmutil thinlocalsnapshots / 999999999999. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Mac Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.