IMPORTANT: This site is planned to be decommissioned in 2026. Visit the Tanium Resource Center for all Tanium release notes, user guides, and support information. To view release notes in the Resource Center, see Tanium Release Notes.
IMPORTANT: If you are using semi-annual releases for on premises, see the Release notes for 2024H1 semiannual release, Release notes for 2024H2 semiannual release, or Release notes for 2025H1 semiannual release on the Tanium Resource Center.
Effective October 15, 2024: On prem release notes on the Tanium Knowledge Base are frozen. For release notes related to 7.4 or 7.5 Server and Solutions, see the Monthly updates for Tanium Version 7.4 and 7.5 Server and Solutions on the Tanium Resource Center.
Release Notes TanOS (Version 1.5)
Thank you for choosing Tanium. The following Release Notes document changes between releases of the TanOS software for the Tanium Appliance.
The previous version can be found here: Release_Notes_TanOS_(Version_1.4.0)
TanOS 1.5.6.0083
General Availability Release Date: March 3, 2020
Major Features
- Tanium Core Platform 7.4.2.2036 and Tanium Core Platform 7.3.314.4269 are available from the Tanium Installation menu.
Known Issues and Workarounds
- If LACP is enabled on the switch that is connected to the Tanium Appliance, the network interface remains down after the initial configuration. Initial configuration does not yet support NIC team configuration. To avoid this issue, disable LACP from the switch until you can work with your TAM to enable NIC teaming.
Upgrade Considerations
- Minimum TanOS to upgrade from: TanOS 1.3.4 (See https://docs.tanium.com/appliance/appliance/upgrade.html for details on supported upgrade paths).
- Customers with a clustered appliance (two Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first.
TanOS 1.5.6.0082
General Availability Release Date: February 25, 2020
Major Features
- Automated off-box backups can now be scheduled for Full, Minimal, and Tanium Server Database backups.
- Tanium Core Platform 7.4.2.2033 is available from the Tanium Installation menu.
Improvements
- Health Check no longer reports a failure when no clients report to Tanium Server; this is handled through the Tanium Console.
- Health Check: External DNS checks are not performed when Airgap configuration is enabled.
- Updated the BIOS firmware for R430-based appliances.
- Removed the option to download the Tanium KeyUtility tool from TanOS. The KeyUtility tool is available from your TAM.
- Reduced user intervention when entering and exiting maintenance mode.
- Resolved miscellaneous security issues.
Bug Fixes
- Fixed TanOS log files from showing an error if the log file does not yet exist.
- Deleting a TanOS log no longer causes a pause in log recording.
- Added tanium-init.dat MD5 to the About this Appliance menu.
- The tanadmin account is no longer locked out from the physical or hypervisor console.
- The ifcfg file is now created at the time of interface configuration.
- Import Existing Keys is no longer available for Tanium Server 7.4 installations.
- Resolved issue with special characters used in the password for the tanium account.
Known Issues and Workarounds
- If LACP is enabled on the switch that is connected to the Tanium Appliance, the network interface remains down after the initial configuration. Initial configuration does not yet support NIC team configuration. To avoid this issue, disable LACP from the switch until you can work with your TAM to enable NIC teaming.
Upgrade Considerations
- Minimum TanOS to upgrade from: TanOS 1.3.4 (See https://docs.tanium.com/appliance/appliance/upgrade.html for details on supported upgrade paths).
- Customers with a clustered appliance (two Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first.
TanOS 1.5.5.0197
General Availability Release Date: January 28, 2020
Major Features
- Introduced support for Tanium Core Platform 7.4.1.1939.
- Tanium Core Platform 7.3.314.4250 is available from the Tanium Installation menu.
- All external backups are now encrypted. An encryption key must be added from the Backup/Restore menu.
- Support for NIC firmware upgrades.
- The Tanium Appliance no longer responds to LLDP requests if the latest NIC firmware is installed. This prevents Cisco DCBX from disabling the Tanium Appliance NIC ports.
- Support for Direct Connect zone proxy.
Improvements
- Reinitialize Replication now rejoins a Tanium Server to a cluster after a failover. It is no longer necessary or recommended to reconfigure the cluster after a failover.
- Removed the Reinitialize Replication option from the Database Operations menu. You can still find this option under Tanium Operations > Configure Cluster.
- Changes to support Tanium Core Platform 7.4:
- Ability to import public keys to Tanium Zone Server through the tanium-init.dat file.
- Zone server configuration now supported through the Tanium Console.
- Added the zone server registration fingerprint to the About this Appliance menu.
- Capability to uninstall the Tanium Zone Server Hub.
- Health Check now monitors available memory instead of free memory.
- Updated BIOS, PERC and NIC firmwares.
Bug Fixes
- Fixed issue with upgrade removing old kernel needed by the alternate partition.
- Fixed issue with grub.cfg update during TanOS upgrade.
- Fixed issue that could fill up the /boot directory after multiple upgrades.
- Fixed potential issue rolling back to 1.4 from 1.5.x.
- Addressed issue with Tanium Module Server sync when Trace and Trace Zone Proxy are installed.
- Default Expired Passwords Effect is now set to Change Password.
- Allow a NIC team to be taken UP or DOWN from the TanOS menus.
- Fixed issue deleting a NIC team.
- Fixed issue with deleted routing table entry returning after restarting network service.
- Resolved error when setting Tanium Global Settings during upgrade from 1.4.x or earlier.
- Fixed issue when setting virtual NICs to DHCP (not recommended for production environments).
- Fixed issue with network restart failure on a virtual appliance.
- Fixed issue that prevented an IP address change on a virtual appliance.
- Fixed IP address input validation when changing an IP address.
- Fixed issue with the SQL Connection string dropping IP address during a network configuration change.
- Fixed truncated module names in the Module Log File Access menu.
Known Issues and Workarounds
- If LACP is enabled on the switch that is connected to the Tanium Appliance, the network interface remains down after the initial configuration. Initial configuration does not yet support NIC team configuration. To avoid this issue, disable LACP from the switch until you can work with your TAM to enable NIC teaming.
Upgrade Considerations
- Minimum TanOS to upgrade from: TanOS 1.3.4 (See https://docs.tanium.com/appliance/appliance/upgrade.html for details on supported upgrade paths).
- Customers with a clustered appliance (two Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first.
TanOS 1.5.4.0084
General Availability Release Date: October 22, 2019
Major Features and Improvements
- Includes security fix and several bug fixes.
Known Issues and Workarounds
- N/A
Upgrade Considerations
- Minimum TanOS to upgrade from: TanOS 1.3.4 (See http://docs.tanium.com for details on supported upgrade paths).
- Customers using a clustered appliance (2 Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first
TanOS 1.5.3.0124
General Availability Release Date: October 8, 2019
Major Features and Improvements
- Supports new Version 3 Tanium Appliance hardware, which includes updated CPUs and SSD storage.
- Includes numerous usability enhancements and bug fixes.
Known Issues and Workarounds
- N/A
Upgrade Considerations
- Minimum TanOS to upgrade from: TanOS 1.3.4 (See http://docs.tanium.com for details on supported upgrade paths).
- Customers using a clustered appliance (2 Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first
- Be sure you know the default tanadmin user’s password before upgrade.
TanOS 1.5.2.0107
General Availability Release Date: August 13, 2019
Major Features and Improvements
- Includes Tanium Platform 7.3.314.4147
- TanOS now alerts on Critical HW events. These events also flow to the Health Check module.
- Includes numerous Usability enhancements (like consistent Yes|No prompts) and bug fixes
Known Issues and Workarounds
- N/A
Upgrade Considerations
- Minimum TanOS to upgrade from: TanOS 1.3.4 (Please see http://docs.tanium.com for details on supported upgrade paths)
- Customers using a clustered appliance (2 Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first
- Be sure you know the default tanadmin user’s password before upgrade.
TanOS 1.5.1.0060
General Availability Release Date: July 9, 2019
Major Features and Improvements
- Includes BIOS update for Intel MDS Vulnerability on Tanium V2 Appliance hardware
- Added full support for the Tanium Airgap RPM (known as Airgap ISO on Windows). Allows import of content and air gap manifest, individual Airgap solution bundles, or customer solution bundles.
- Updated to new June 2019 Tanium EULA
- Includes Tanium Platform 7.3.314.4103
Known Issues and Workarounds
- Avoid performing a clean install of platform 7.3.314.3424 on TanOS 1.5.1.0060
- Upgrade from TanOS 1.4.0 will terminate with a reboot, without warning. Upgrade for 1.3.4 will pause before reboot.
Upgrade Considerations
- Customers can upgrade from either TanOS 1.3.4, TanOS 1.4.0 or TanOS 1.5.0. It is required to upgrade to at least TanOS v1.3.4 prior to upgrading to TanOS v1.5.x. Please see http://docs.tanium.com for details on supported upgrade paths
- TanOS 1.5.x introduces Postgres SSL communication. Therefore, during upgrade, postgres services should NOT be stopped, and postgres MUST be running during upgrade. Customers using a clustered appliance (2 Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first
- When upgrading a clustered Tanium Server instance, it is required for the tanadmin users public key from the primary cluster member, to be added to the tancopy users authorized keys on the secondary cluster member appliance.
- When upgrading a clustered Tanium Server instance, it is highly recommended to check database cluster status, to ensure functionality, prior to upgrade.
- It is highly recommended to configure the tanremote iDrac user and verify virtual console access before performing upgrade
- Before upgrade, change your TanOS user (tanadmin role) password, else TanOS upgrade could expire your account and fail upgrade. Also review the TanOS Password Policy post upgrade, as new policies have been added.
- Be sure you know the default tanadmin user’s password before upgrade.
- If upgrading from an appliance with no role installed (Tanium Server, Tanium Module Server, etc), install the role prior to TanOS upgrade.
TanOS 1.5.0
General Availability Release Date: June 4, 2019
Major Features and Improvements
- Added a new Tanium End User License Agreement, which users will need to read and accept after upgrade
- Added official Virtual Appliance support for Microsoft Hyper-V hypervisor
- Includes Tanium platform version 7.3.314.3668
- Added operating system and database compliance requirements for deployment to Federal government networks
- Archiving to the tanium_archive db will be automatically disabled on upgrade to 1.5.0
- Enhanced the TanOS Health Check with numerous additional checks
- Modified firewall management of Tanium platform ports, so ports are only opened when the owning service is started
- Improved workflows for managing LDAPS and Zone Server TLS certificates
- Improved Maintenance Mode, so that it can be enabled from within the activity that requires it
- Added TanOS Activation status and failure reasons, along with other improvements, to the TanOS About page
- Improved air gap content management. Customers can now ingest individual solution bundles or the entire air gap RPM within TanOS
- Updated OS and firmware packages to latest available
Known Issues and Workarounds
- Avoid performing a clean install of platform 7.3.314.3424 on TanOS 1.5.0
- Upgrade from TanOS 1.4.0 will terminate with a reboot, without warning. Upgrade for 1.3.4 will pause before reboot.
- Factory reset can leave the system in an unusable state. It is not recommended to perform Factory reset on a TanOS 1.5.0 appliance. If a factory reset is needed, please contact your TAM
- TanOS 1.5.0 removes the capability to create and execute custom database queries
- Removed Tanium Platform ANalyzer (TPAN) execution from within TanOS. Tanium Health Check module is the preferred method of running TPAN.
Upgrade Considerations
- Customers can upgrade from either TanOS 1.3.4 or TanOS 1.4.0. It is required to upgrade to at least TanOS v1.3.4 prior to upgrading to TanOS v1.5.0. Please see http://docs.tanium.com for details on supported upgrade paths
- TanOS 1.5.0 introduces Postgres SSL communication. Therefore, during upgrade, postgres services should NOT be stopped, and postgres MUST be running during upgrade. Customers using a clustered appliance (2 Tanium Server appliances with clustered Tanium Server and database) should upgrade the appliance hosting the primary database first
- When upgrading a clustered Tanium Server instance, it is required for the tanadmin users public key from the primary cluster member, to be added to the tancopy users authorized keys on the secondary cluster member appliance.
- When upgrading a clustered Tanium Server instance, it is highly recommended to check database cluster status, to ensure functionality, prior to upgrade.
- It is highly recommended to configure the tanremote iDrac user and verify virtual console access before performing upgrade