Faster Comet Server web interface load times (COMET-1680)
The Comet Management Console now loads more quickly, reducing the time admins spend waiting for pages to render when navigating 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.
The Gradient PSA integration has been retired. Existing configurations are preserved and clearly marked as deprecated in the UI, with a startup warning to help administrators plan any necessary migration.
Proxmox customers can now protect their VM and LXC templates — with full backup and restore support. This closes a meaningful gap in Proxmox coverage, ensuring the building blocks of an environment can be recovered just as reliably as live workloads.
Zero-touch device registration for 2FA-enabled users
Administrators can now register devices on behalf of users who have 2FA enabled, using either lobby mode or an install token, without requiring the user to be present or share their TOTP code. This removes a key friction point in enterprise and MSP deployments, enabling true zero-touch device provisioning.
Customers running Ubuntu 25 can now take full disk image backups, keeping pace with the latest release cycle.
Auto-add Cluster Manager target when creating Storage Templates
When setting up a Storage Template or replication target, administrators are now prompted to simultaneously register the destination as a Cluster Manager target — eliminating a common multi-step setup gap.
Streamlined licensing during Comet Core installation
The Comet Core installer now presents a streamlined licensing experience showing only the serial license key option.
/run and /var/run excluded from Unix Files and Folders backups by default
Files and Folders backups on Unix systems now automatically exclude /run and /var/run by default. Excluding these paths out-of-the-box improves efficiency and reduces unnecessary data capture without any user configuration.
Improved error messaging for Backblaze Storage Vault creation failures
When a Backblaze-backed Storage Vault fails to be created, users now receive a clear, actionable error message instead of a generic server error — reducing troubleshooting time and support overhead.
Storage Vault ModifyTime is now updated when edited in the Comet Management Console
Fixed an issue where Comet Core would fail to start if the Storage Gateway failed to validate the storage buckets
Fixed an issue where, when logged in as a top-level admin, the User Details page in the Comet Management Console displayed policies from other tenants in the policy dropdown
Fixed an issue when requesting an Impossible Cloud (Partner API) Storage Vault where the request body was empty
Fixed an issue when requesting an Impossible Cloud (Partner API) (Object Lock) Storage Vault where object lock days defaulted to 0. Impossible Cloud requires object lock days of > 0
Fixed an issue on the Comet Management Console where the test connection button would fail for Impossible Cloud (Partner API)
Fixed an issue with generating MSI files if the branding name contained unsupported characters
Hid empty menu items on the Comet Management Console restore dialog snapshot selector. This is now the same as on the Comet Backup desktop app
Fixed an issue with the Proxmox Protected Item dialog in the Comet Management Console web interface rendering the Advanced tab multiple times when authentication was unsuccessful
Fixed an issue with hardware configurations used during restoration of Windows environments from VMware/Hyper-V to Proxmox
Fixed an issue causing connections to be blocked to Proxmox clusters with one or more nodes down
Fixed a cosmetic issue rendering overflowing content unable to be scrolled in some areas of the Comet Management Console web interface
