Transfer the file to the offline machine via USB/internal transfer and apply it using: vnclicense -add LICENSE_FILE_PATH 4. Critical Trade-offs
You can apply the license using the command line or by manually placing the file in the correct directory. 1. Command Line (Recommended) Open your terminal or command prompt as an Administrator and run the following command: vnc offline license file
Ensure that your offline license file does not expire. Some licenses might have a validity period. Transfer the file to the offline machine via
| Problem | Likely Cause | Solution | |---------|--------------|----------| | Invalid license file | File corrupted or wrong product version | Regenerate from portal with correct VNC edition. | | License expired | Subscription license not renewed | Download new .lic before expiry. | | Hardware ID mismatch | Changed MAC address or disk | Generate new machine ID and repeat activation. | | File not found | Wrong path or permissions | Place in /etc/vnc/ and chmod 644 . | Command Line (Recommended) Open your terminal or command
When scripting for offline environments, use static MAC addresses or VM UUIDs. Changing a VM's network adapter or motherboard (in a VM settings) will invalidate the offline license file, forcing a re-activation.
Implementation details (file extension, install path, binding method) vary by VNC vendor/product. Always consult the vendor’s licensing documentation for exact steps and required identifiers.
| Error Code | Message | Solution | | :--- | :--- | :--- | | | "Invalid request file format" | The request file was corrupted during transfer. Use a USB drive formatted as FAT32 or NTFS, not exFAT. | | E-LIC-015 | "License already bound to another machine" | You attempted to reuse an offline license file. Offline licenses are node-locked. Generate a new request and a new response. | | E-LIC-022 | "Hardware ID mismatch" | Something changed on the target PC (CPU, motherboard, or MAC address). Re-generate the request from the current state and re-activate. | | E-LIC-088 | "Time skew detected" | The system clock on the offline PC is years off. Sync the clock via NTP (if possible) or set it manually within a few minutes of real time. | | No error, but offline | License shows "Trial" after applying file | You applied the wrong file type. Ensure you downloaded the "Response" file, not the "Request" file. |