Good Backup 0.1.7 for Apple Silicon Mac and 0.1.2 for Windows x64 were built and publicly released on October 16, 2026. This October 18 entry keeps the update calendar readable while recording the true release date. The change is about preserving access to an existing encrypted vault during reconnection, not a completed cross-platform backup-and-restore validation.
Keep the original encryption key
A Nextcloud sign-in issues a device token for connecting to the account. That token is separate from the backup vault encryption key. Reconnecting does not create a second Nextcloud account and must not silently create a different vault key for backups that already exist.
Mac 0.1.7 reuses its saved vault key even if the Connection field has not finished loading. Both Mac and Windows block silently replacing an existing saved key with a different one. If a device has prior backup settings but no saved key, Good Backup asks for the original key instead.
Windows reconnection and beta checks
Windows 0.1.2 adds a field for entering the original backup key before browser sign-in. The source includes a test that rejects reconnection to an existing vault without that key. Seven local Windows core and engine tests passed in this check; those tests do not replace a real Windows device trial.
The October 16 public GitHub prerelease includes the Apple Silicon Mac 0.1.7 ZIP and Windows x64 0.1.2 ZIP. The local packages match the release assets’ SHA-256 digests. The Mac build is locally signed, while the Windows package still needs its sign-in, scheduled backup, and restore flows tested on a Windows PC. Linux remains at 0.1.0.
What to do before relying on it
Save the original recovery key somewhere secure. A new key cannot decrypt snapshots written with the old key, and neither Nextcloud nor Good Tools can recover it for you.
Keep another working backup until Good Backup completes a full backup and a test restore on your own device. A successful package build, source test, or GitHub download alone does not establish recoverability.