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Environment/Versions TTworkbench 31 64 Bit Microsoft Windows/Linux  64 Bit Answer TTworkbench 31 needs a Java Platform, Standard Edition Java SE version 8 or greater.  A 64-bit JVM is required (no support for 32-bit JVM). OpenJDK 14 is recommended. Microsoft Windows: The TTworkbench 31 package already contains an OpenJDK 14 installation in the "jdk" subfolder of the TTworkbench installation folder. Linux: OpenJDK 14 is recommended. Notes: TTworkbench 31:  Java 8 or newer (OpenJDK 14 recommended) TTworkbench 30:  Java 8 or newer (OpenJDK 14 recommended) TTworkbench 29:  Java 8 or newer (OpenJDK 13 recommended) TTworkbench 28:  Java 8 or newer (OpenJDK 12 recommended) TTworkbench 27:  Java 8 or newer (OpenJDK 11 recommended) TTworkbench 26:  Java 8 (only) Additional information : For additional Java settings information, refer to FAQ17885