Last updated: October 2025. For version-specific nuances, refer to Adobe’s official ColdFusion Licensing Guide.
If blocked, configure CF to use an HTTP proxy in jvm.config :
ColdFusion uses a broadcast mechanism to check for license duplicates within a local area network (LAN). When a ColdFusion service starts, it sends out a packet containing its serial number. If another server responds with the same ID, the "out of compliance" flag is triggered. This usually happens in three specific scenarios:
On any server that should not retain the license:
The IT team immediately launched an investigation to determine the cause of the duplicate serial number. They reviewed their licensing documentation, checked the server configurations, and consulted with Adobe support. After some digging, they found that the server with the duplicate serial number was not properly configured, and the licensing details were not accurately tracked.
The "same serial number found on another server" error is Adobe’s mechanism to enforce license compliance. While inconvenient, it protects both you (from unknowingly violating terms) and Adobe’s licensing model. By following the deactivation and cache-reset steps above, you can quickly restore normal operation and keep your ColdFusion environment compliant.