# Release: 2.4.0.102 (Canary) 2026-09-25 **URL:** \ **Category:** Releases\ **Created:** [September 25, 2026, 5:16pm UTC](https://forum.duplicati.com/t/release-2-4-0-102-canary-2026-09-25/22729 "2026-09-25T17:16:16Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![kenkendk](https://forum.duplicati.com/user_avatar/forum.duplicati.com/kenkendk/32/5305_2.png) [@kenkendk](https://forum.duplicati.com/u/kenkendk)\ **Post date:** [September 25, 2026, 5:16pm UTC](https://forum.duplicati.com/t/release-2-4-0-102-canary-2026-09-25/22729/1 "2026-09-25T17:16:17Z")
# [2.4.0.102\_canary\_2026-09-25](https://github.com/duplicati/duplicati/releases/tag/v2.4.0.102_canary_2026-09-25) This release is a canary release intended to be used for testing. # New restore-test command A new `restore-test` command restores a sample of files from a backup into a temporary folder and verifies them. The sample size, download budget, runtime and version can be controlled with the `--restore-test-*` options. For backups, the option `--perform-restore-test-after` runs the restore test automatically after a given amount of time. # Choosing a VSS provider Windows snapshots can now use a specific VSS provider with `--vss-provider-id=`. The snapshot setup also detects a provider that does not expose mapped paths and cannot be used. If no provider is selected, it falls back to the Microsoft Software Shadow Copy provider. # Lower memory usage when deleting versions Deleting, compacting, purging and repairing forced SQLite to build a large in-memory table holding all fileset entries being removed. The filesets are now removed one at a time, which bounds memory use to a single version. On a synthetic database with 100 versions and 300k files this was 16-20% faster with an 80% reduction in memory. The wasted space calculation was also rewritten and is roughly 9x faster on large databases. # Synchronization tool fixes A number of problems in the remote synchronization tool were fixed, thanks @JamBalaya56562: - The backend managers received the wrong arguments, so a missing source folder was created and the empty listing deleted every file in the destination. - Folder entries reported by the destination are now ignored instead of failing the run. - Renames now use the backend’s own rename and content verification compares through temporary files, reducing peak memory from gigabytes to under 100 MB for large volumes. - Failed deletes and renames are now counted in the return code instead of reporting success. - A destination with mode interval or counting but no interval or count was only synchronized once. It now runs inline with a warning. - The `--case-insensitive-remote` option is now honoured, so a case-only rename no longer loses the file on case-insensitive destinations. - The primary sync database is now closed when the run ends, and the `--sync-remote-state` warning names values the option accepts. Additionally, the tool no longer fails to copy folders on backends that report paths with a trailing separator. # Restore and backup no longer hang on failures A restore that hit a volume it could not download, decrypt or decompress could wait forever instead of failing. All restore stages are now released when a volume cannot be produced. Similarly, stopping a backup while a backend call was stuck in a transfer that did not observe cancellation left the operation waiting; the backend manager now abandons the call and the operation returns as cancelled, thanks @JamBalaya56562. # Path redaction in reports Additional checks prevent file paths from being included in logs and reports sent outside the system. The option `--allow-paths-in-log-messages` disables the redaction for environments where paths can be reported safely. # Selecting which operations send reports The mail, HTTP, XMPP and Telegram reporting modules have a new option, such as `--send-mail-operations`, that selects which operations emit a report. The default is to report backups only, as before. # Command-line listing fixes Several listing commands did not behave as documented, thanks @JamBalaya56562: - `list-folder-contents` now accepts a folder without a trailing separator and picks the latest version when no time or version is given. - `search` now searches sub-folders of the given folder. - `list-file-versions` and the V2 `list-versions` endpoint now return results and report correct timestamps. - `purge` and `set-locks` now stop when the given version or time matches no fileset instead of acting on every fileset. ## Detailed list of changes - Fixed `list-folder-contents` returning nothing for a folder given without a trailing separator, thanks @JamBalaya56562 - Added `--vss-provider-id` to choose a VSS provider, with a fallback to the Microsoft Software Shadow Copy provider when the selected one cannot be used - Added per-message ephemeral encryption keys and payload compression for console connections - Fixed `search` not searching the sub-folders of the given folder, thanks @JamBalaya56562 - Fixed `list-folder-contents` failing with “Multiple filesets found” when no time or version is given, thanks @JamBalaya56562 - Fixed a restore hanging forever when a volume cannot be downloaded, decrypted or decompressed, thanks @JamBalaya56562 - Fixed a wrong missing key warning when using the default secret provider - Fixed an aborted operation waiting forever for a backend call that does not observe cancellation, thanks @JamBalaya56562 - Fixed an exact time lookup returning every fileset when none matched, thanks @JamBalaya56562 - Fixed a queued task being listed as running in the task queue, thanks @JamBalaya56562 - Rewrote the wasted space calculation to be faster and use less memory - Fixed `list-file-versions` and the V2 `list-versions` endpoint returning no results and wrong timestamps, thanks @JamBalaya56562 - Fixed a remote sync destination with mode interval or counting but no interval or count only synchronizing once, thanks @JamBalaya56562 - Added path redaction checks for logs and reports and the `--allow-paths-in-log-messages` option - Added support for console status and error messages in Duplicati Backend so failure messages are less generic - Fixed most operations reporting 0% progress - Added a pluggable slot for license usage collection - Fixed the sync tool failing to copy folders on backends that report a trailing separator - Fixed `purge` and `set-locks` acting on every fileset when the given version or time matched none, thanks @JamBalaya56562 - Hardened remote control callback requests and disabled redirects - Added login throttling to protect against brute-force attempts - Fixed Drime trash pagination validation and folder counts with trashed entries, thanks @tristanXme - Fixed a finished task reporting no outcome while it was still the current task, thanks @JamBalaya56562 - Fixed the sync inventory folder listing being case-insensitive and unindexed, thanks @JamBalaya56562 - Added `--send-mail-operations`, `--send-http-operations`, `--send-xmpp-operations` and `--send-telegram-operations` to choose which operations send reports - Added the `restore-test` command and the `--perform-restore-test-after` backup option - Fixed Google Workspace restore browsing being rejected due to a read-only scope request - Changed Google Workspace to emit a root folder like MS365 - Fixed the SMB live test starting before Samba accepted connections, thanks @JamBalaya56562 - Fixed the Windows shell icon overlay returning empty results and adjusted icon sizes - Fixed Google Workspace warnings and a lost license seat warning for suspended and archived users - Fixed the sync command ignoring `--case-insensitive-remote`, thanks @JamBalaya56562 - Added a check that the VSS provider has mapped a usable path - Reduced memory usage when removing filesets in delete, cleanup, repair and purge - Reduced memory usage when deleting filesets during backup - Fixed the primary sync database never being disposed, thanks @JamBalaya56562 - Fixed the sync tool returning success when deletes or renames failed, thanks @JamBalaya56562 - Fixed the sync tool downloading volumes into memory for renames and verification, thanks @JamBalaya56562 - Fixed the sync tool copying, deleting and verifying folder entries reported by the destination, thanks @JamBalaya56562 - Fixed the sync tool passing the wrong arguments to its backends, causing an empty source to delete the destination, thanks @JamBalaya56562 - Fixed the `--sync-remote-state` warning suggesting values the option rejects, thanks @JamBalaya56562 ## Updates to ngclient - Added a counter dialog for Google Workspace data - Added support for disabling chunking on S3 providers that do not support it - Fixed the restore file picker not handling a failed database repair, thanks @JamBalaya56562 - Fixed a cancelled destination test not stopping the request, thanks @JamBalaya56562 - Added WebModules storage, HTTP and destination test component tests, thanks @JamBalaya56562