This occurs when the client machine cannot locate the host machine over the network.
A standard FlexLM license file for OrCAD requires a SERVER line to function correctly. If you receive an error stating "No SERVER line," ensure the first line of your .dat file follows this format: SERVER Example: SERVER MyPC ANY 5280 .
Open Windows Services ( services.msc ), locate your OrCAD license service, and verify it is running. Add an explicit inbound and outbound rule in Windows Firewall for TCP ports 5280 and the dynamic port assigned to the cdslmd daemon. Error: "Invalid Host ID" or "Feature Has Expired" Orcad 10.5 License File
If you absolutely must run OrCAD 10.5 for legacy schematics:
A node-locked license binds the OrCAD software to a single computer. The license file maps directly to that specific machine’s unique MAC address or a physical USB hardware dongle. This occurs when the client machine cannot locate
Otherwise, archive those .DSN and .MAX files, export them to PDF, and move to a supported platform. Your future self—and your legal department—will thank you.
For older versions like 10.5, it is recommended to place the license.dat file in a dedicated directory on the C: drive, such as C:\flexlm (note that folder names are case-sensitive). Open Windows Services ( services
| Solution | Cost | License Complexity | Learning Curve | | :--- | :--- | :--- | :--- | | | High (if buying used) | Very High (FLEXlm) | Medium | | OrCAD Lite (Current) | Free | None (automatic) | Low (modern UI) | | KiCad 7/8 | Free (Open Source) | None | Medium | | Altium Designer | $$$ Subscription | Cloud-based | High | | EAGLE (Autodesk) | Free tier available | User account | Low |
Replace that word with your actual (found under Windows System Settings).
The Hostname and HostID (MAC address) of the machine allowed to run the software.
Open the file in a text editor, alter the hostname value immediately following the word SERVER , and restart the service via LmTools. Do not alter any characters in the cryptographic feature lines, or you will corrupt the digital signature. 3. "Invalid License Key" or "Expired Feature"