Added Model Context Protocol (MCP) support to the Comet Management Console, facilitating agent-based workflows.
Comet Server webhook notifications as Slack messages
Added an option to format Comet Server webhook notifications as Slack messages, allowing a webhook to target a Slack Incoming Webhook URL and render natively in a Slack channel. This is configurable when adding or editing a webhook in the Comet Management Console.
Added deeplink support in the Comet Management Console for navigating directly to individual and all Protected Items, Storage Vaults, and devices via shareable URLs (COMET-59329)
NOTICE: Comet Backup on macOS now requires macOS 12 "Monterey" or later.
Any users of macOS 10.13 "High Sierra", 10.14 "Mojave", 10.15 "Catalina", and 11 "Big Sur" should remain on the Comet 26.4.x "Phoebe" quarterly series.
Added support for deeplinks to user devices, the device actions dialog, and backup dialog on Comet Management Console
Added the default server URL to the pre-built macOS Comet Backup Agent installer
Added a job filter and a button to show deleted Protected Items on the Recent Activity page of the Comet Management Console
Added a temporary Protected Item entry when performing cross-device restores from the Comet Backup desktop client
Improved performance and reduced memory usage (COMET-5034)
Added support for ML-KEM post-quantum encryption in TLS (COMET-59543)
Updated the Comet Backup desktop client's granular restore wizard to display disk partition sizes, bringing it in alignment with the Comet Management Console web experience
Fixed an issue causing live connected devices to fail to reconnect after a password change in the Comet Management Console
Fixed an issue with starting sessions
Fixed an issue with obtaining TOTP codes
Fixed an issue causing Comet Backup agent installation failures on Synology DSM7 devices during fresh installations
Fixed an issue causing Office 365 backups to potentially skip "calendars" and "contacts" in some cases where duplicate items are found
Fixed an issue causing the configure button to be shown while performing a cross-device restore on a Comet Backup desktop client with no Protected Item available to edit
Fixed an issue in the Comet Backup desktop app where scheduled backup jobs could run immediately instead of at their scheduled time, which could cause scheduled backups to be missed
Fixed an issue with invalid paths in Comet Server Storage Role (COMET-59556)
Fixed an issue with "relative path config not allowed" errors when using FTP Storage Vaults with "Store in default home directory" enabled (COMET-59732)
Faster Comet Server web interface load times (COMET-1680)
The Comet Management Console now loads quicker on initial startup, reducing the time admins and users spend waiting to access the web interface.
Additional Impossible Cloud regions available as Storage Vaults (COMET-59652)
Comet now supports the eu-west-3 and us-west-1 regions when configuring an Impossible Cloud Storage Vault, giving admins additional options for data residency and lower-latency backups in those geographies.
In Comet 26.5.0, the previous hard cap of 15,000 log messages per backup job has been replaced with an aggregation approach. Up to 1,000 instances of the same warning message are recorded verbatim; after that, a summary entry is appended for every further 1,000 occurrences of the same message. This ensures that new issues are always visible in the job log and makes it easier to confirm that a job is still actively running.
Diagnostic logging status indicator for Files and Folders backups
When Files and Folders diagnostic logging is active, Comet now logs a message at the start of the job to indicate that diagnostic logging is enabled. This is useful when reviewing logs with support and serves as a reminder to disable diagnostic logging when it is no longer needed.
The Comet Management Console now shows a live updating item count while a backup job is running, matching the existing behaviour in the Comet Backup desktop app. This gives users an additional way to confirm that a job is making progress when it might otherwise appear to have stalled.
Admins can now view each user's two-factor authentication (2FA) status directly from the Users list in the Comet Management Console, without needing to open each user's detail page.
The Comet Management Console now displays a warning banner when the offline license quota is exceeded. The offline server license information widget has been moved to the home page, and the quota exceeded warning message has been improved for clarity.
Linux Sandboxing always enabled for home directory restores
Linux Sandboxing is now permanently enabled for Files and Folders restores to home directories, improving security by isolating file write operations from the broader system.
Missed Backup log entries now include additional context about whether the target device was online at the time the backup was expected to run, making it easier to diagnose why a scheduled backup was missed.
Linux Files and Folders restore sandbox performance improvements
Multiple performance optimisations have been applied to the Linux Files and Folders restore sandbox: the sandbox is now bypassed for non-home paths, a Trie data structure is used for fast path matching, LChown and Chmod operations are combined to reduce worker channel round trips, and worker/UID affinity scheduling has been introduced.
Office 365 calendar and mail backups now stream events and messages as they are processed rather than collecting them all in memory before starting. This reduces peak memory usage during backups of large mailboxes.
Policy default schedules applied to policy default Protected Items
Policy default schedules are now automatically applied to policy default Protected Items that have no schedules of their own configured. For enforced Protected Items, schedules are always applied; for unenforced Protected Items, schedules are applied at Protected Item creation time. Default schedules are shown in a greyed-out, non-interactive state to distinguish them from explicitly configured schedules.
Fixed an issue where existing Storage Templates configured under tenant organizations failed to create new Storage Vaults after upgrading (COMET-59657)
Fixed an issue with Office 365 where a file shrink might cause a SharePoint/OneDrive backup of an account to skip (COMET-59473)
Fixed an issue with invalid paths in Comet Server Storage Role (COMET-59556)
Fixed an issue with Comet backup-tool env var injection in the elevator's run-command-elevated endpoint (COMET-59553)
Fixed an issue on the Comet Management Console Recent Activity page where ghost unknown entries would be shown (COMET-59549)
