File [hot] — Chromeleon License

Defines how many concurrent users or local workstations can active the Chromeleon User Interface at any given time.

Software updates (e.g., upgrading from Chromeleon 7.2 to 7.3) often require an updated license file to unlock the newer software version. Ensure your software maintenance agreement (SMA) is active before attempting a major software upgrade.

A Chromeleon license file is a secure text document (typically using a .lic extension) containing encrypted alphanumeric strings. These strings define your laboratory’s software permissions, tracking exactly what features are active. The file explicitly dictates:

Depending on your version (Chromeleon 7.2, 7.3, etc.), the license information is stored and managed in specific areas: The License Manager chromeleon license file

The ( .cmlic ) is the core authorization component for the Thermo Scientific Chromeleon Chromatography Data System (CDS) . Over recent versions, specifically from Chromeleon 7.3 onwards , the licensing model has transitioned from physical hardware dongles to a more streamlined, dongle-free online activation system. Licensing Workflow & Management

The license file was generated for a different computer or a network card that has since been disabled or replaced.

Open Windows Services ( services.msc ), locate the Chromeleon License Server service, and click Restart . If using a network license, verify that the client workstation has a stable network connection to the license server IP address. 2. "Hardware Key Missing" or "Host ID Mismatch" Defines how many concurrent users or local workstations

License disruptions can halt laboratory workflows. Below are the most common error scenarios and how to resolve them quickly. 1. Error: "No Valid License Found"

Without a properly installed license file, Chromeleon will run in a restricted "Demo" mode, preventing you from connecting to live instruments or saving critical GxP-compliant data. Types of Chromeleon Licenses

If an IT technician replaces a motherboard or network interface card (NIC) on a chromatography workstation, note that it will break the license. Plan the license rehost ahead of time. A Chromeleon license file is a secure text

For large installations or labs with many workstations, using a central is the most efficient approach. Instead of each client PC having its own physical dongle, a License Server is installed on a dedicated computer on the network. It manages a pool of licenses and distributes them to client PCs as needed.

: Verify that the Chromeleon License Server service is running on the host machine. Ensure that your local firewall is not blocking the specific network ports utilized by Chromeleon. 6. Best Practices for License Management