Here's what's new in KCT 3.12.6. You can find the applicable system requirements here.

To view release notes, system requirements, and product guide PDFs for supported versions of KCT, see KCT previous versions. To view release notes for multiple versions and multiple SolarWinds Platform products on a single page, see the release notes aggregator.

 

New features and improvements in KCT

Updated license framework

The licensing framework in KCT has been updated to 3.9.18.

Enhanced commercial licensing

KCT 3.12.6 includes enhanced commercial subscription licensing. When a subscription license expires, users will see a warning banner and a button allowing them to renew their license. Users are unable to upgrade to the latest version of KCT without an active license.

License subtypes are now displayed on the About screen: Commercial-Subscription, Commercial-Perpetual, and Commercial-Temp Key. The About screen also shows license expiry status and expiration date for expired licenses: Commercial-Subscription-Expired, Commercial-Perpetual-Expired, Commercial-Temp Key-Expired, and Evaluation Expired.

Implemented RFC message format for syslog logs

KCT now supports RFC 3164 and RFC 5424 message formats for syslog messages. The default syslog format is set to None.

Support for new device model

Cisco Catalyst 1300 has been added to the Cisco.SmallBusiness model selection list, allowing users to select the correct device type.

Version table support for Cisco.SmallBusiness devices

KCT now generates version table report for Cisco.SmallBusiness device type.

TFTP disabled by default for new installations

To reduce the risk of vulnerability, the TFTP server is now disabled by default for new KCT installations. The TFTP service will remain enabled by default during upgrades from previous versions to 3.12.6, In KCT 3.12.6, users can enable the TFTP service by clicking the Start button in the TFTP pane and enabling Automatically start TFTP server on program startup under Options > Setup > TFTP Server.

New documentation for registry settings

Documentation has been updated to include details on registry settings. See Registry settings.

Fixed customer issues

Case number	Description
01893257, 01768003	Inconsistent execution of the MAC Address Table Activity Report on Cisco 9K Switch models has been resolved.
01985700	The "Unknown action" command failure is treated as an error in the Device.CLI.Send activity for Fortinet.FortiOS.General device types.

Installation or upgrade

For new installations, you can download the installation file from the product page on https://www.solarwinds.com or from the Customer Portal.

For information about installing Kiwi CatTools, see the Kiwi CatTools Installation Guide.

End of life

Version	EoL announcement	EoE effective date	EoL effective date
3.12.4	October 21, 2025: End-of-Life (EoL) announcement – Customers on KCT version 3.12.4 or earlier should begin transitioning to the latest version of KCT.	July 15, 2026: End-of-Engineering (EoE) – Service releases, bug fixes, workarounds, and service packs for KCT version 3.12.4 or earlier will no longer actively be supported by SolarWinds.	July 15, 2027: End-of-Life (EoL) – SolarWinds will no longer provide technical support for KCT version 3.12.4.
3.12.3	October 16, 2024: End-of-Life (EoL) announcement – Customers on KCT version 3.12.3 or earlier should begin transitioning to the latest version of KCT.	January 16, 2025: End-of-Engineering (EoE) – Service releases, bug fixes, workarounds, and service packs for KCT version 3.12.3 or earlier will no longer actively be supported by SolarWinds.	January 16, 2026: End-of-Life (EoL) – SolarWinds will no longer provide technical support for KCT version 3.12.3.
3.12.2	October 16, 2024: End-of-Life (EoL) announcement – Customers on KCT version 3.12.2 or earlier should begin transitioning to the latest version of KCT.	January 16, 2025: End-of-Engineering (EoE) – Service releases, bug fixes, workarounds, and service packs for KCT version 3.12.2 or earlier will no longer actively be supported by SolarWinds.	January 16, 2026: End-of-Life (EoL) – SolarWinds will no longer provide technical support for KCT version 3.12.2.
3.12.1	October 16, 2024: End-of-Life (EoL) announcement – Customers on KCT version 3.12.1 or earlier should begin transitioning to the latest version of KCT.	January 16, 2025: End-of-Engineering (EoE) – Service releases, bug fixes, workarounds, and service packs for KCT version 3.12.1 or earlier will no longer actively be supported by SolarWinds.	January 16, 2026: End-of-Life (EoL) – SolarWinds will no longer provide technical support for KCT version 3.12.1.

See the End of Life Policy for information about SolarWinds product life cycle phases. To see EoL dates for earlier KCT versions, see KCT release history.

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