By understanding where the file lives, how to install it properly, and how to troubleshoot the most common errors (Invalid Host ID, Expiration, Missing Features), you can ensure 99.9% uptime for your chromatography data system. Always remember:
You must request a Rehost from Thermo Fisher support. Provide them with the new Host ID. Note that some license agreements limit rehosting to once every 90 days. Error 2: "License File Expired" Symptom: Chromeleon launches but enters "Viewer Mode" or "Demo Mode" and will not acquire data. chromeleon license file
All floating licenses are currently in use by other analysts. By understanding where the file lives, how to
A: Contact Thermo Fisher with your software entitlement ID (found on your original purchase order). They can resend the file, though a rehost fee may apply. Note that some license agreements limit rehosting to
Review the license file in a text editor. Look for lines starting with FEATURE . Compare against your purchase order. Contact Thermo to add missing features; you will receive a new license file. Error 4: "Concurrent License – All Users Busy" Symptom: Users receive "License checkout failed. No license available."
Purchase a renewed maintenance agreement. Thermo will issue a new .lic file with a later expiration date. Install it over the old one (the system will automatically overwrite). Error 3: "Missing License Features" Symptom: Chromeleon opens, but you cannot control your HPLC or GC. Error: "Feature not available."
The license file does not contain the correct instrument drivers or modules (e.g., missing "VWD" or "MS" feature codes).