Heidelberg Prinect Prepress Interface 45 134 Added By Users Install May 2026
Here is the exact method used by veteran prepress technicians to manually install the 45.134 interface.
Cause: Your MIS is sending a JDF schema that the 45.134 interface does not recognize.
Fix: Open the PrepressInterface.config file (located in C:\ProgramData\Heidelberg\). Add the line: <add key="AcceptUnknownSlots" value="true" />. Here is the exact method used by veteran
Once you have successfully completed the heidelberg prinect prepress interface 45 134 added by users install, run this final validation checklist: If this interface is not installed correctly, the
To successfully deploy the Heidelberg Prinect Prepress Interface 45 134 added by users install, ensure you have: add key="AcceptUnknownSlots" value="true" />
Before troubleshooting the install, it is helpful to know what this interface does:
If this interface is not installed correctly, the press operator will have to set ink keys manually, negating the efficiency of the digital workflow.