Backups & restore points · Status and problems
What does "The backup engine couldn't be found in this build" mean?
Short answer: Part of the app that Data Backup needs is missing, so backups are paused. Reinstall Storage Studio over the current copy — your backup sets, versions and settings are kept.
It means part of Storage Studio that Data Backup needs is missing from the installed copy of the app, so backups are paused. Everything Data Backup needs normally ships inside the app, so this only happens if the installation is damaged or incomplete.
To fix it, download Storage Studio again and reinstall it over the current copy — your backup sets, versions and settings stay as they are. See installing Storage Studio.