Windows 10 version 1809 deleted files for a small set of users whose Known Folder Redirection state matched specific conditions, forcing Microsoft to halt distribution and rework validation and rollout controls.
Pixar nearly lost a huge portion of Toy Story 2 after a recursive Unix deletion met an unreliable backup path, until an off-site workstation supplied an independent recovery copy.
Ma.gnolia's 2009 collapse showed why a synchronized copy is not automatically a backup: corruption reached the service's recovery path, and user bookmarks became irretrievable.
MySpace's 2019 disclosure revealed that a server migration had made years of user-uploaded music, photos and video unavailable, turning maintenance failure into cultural loss.
Adobe Lightroom 5.4 on iOS exposed a dangerous sync boundary when an update removed local photos and presets that had not yet reached cloud storage.