In this case, LibreOffice (of reasonably fresh version) would try to be helpful in its 'JRE Required' error message, telling you that it needs specific architecture (e.g., 64-bit) of JRE.

Take care that you download from the Java home page (the right architecture.

When you have installed a 64-bit LibreOffice, and 32-bit JRE, LibreOffice would not be able to find and use the JRE, no matter how hard you would try it. LibreOffice can only use JRE with matching architecture: i.e., 64-bit LibreOffice can only use 64-bit JRE, and 32-bit LibreOffice can only use 32-bit JRE. You may check the architecture of installed LibreOffice in menu Help ▸ About LibreOffice, where the version string looks like 'Version: 6.4.5.2 ( 圆4)' for 64-bit version, and 'Version: 6.4.5.2 ( x86)' for 32-bit version. If you have 32-bit operating system, you will be offered a 32-bit installer ( Windows (32-bit)⁠ ).If your Windows is 64-bit, LibreOffice Download page by default offers you a 64-bit LibreOffice installer.

To use them, a supported version of JRE/JDK must be present and configured on the system.ĭo not mistake '圆4' and 'x86' architectures: when using Windows, you need to make sure that the architecture of installed LibreOffice matches the architecture of installed JRE. Some LibreOffice functions require Java ( JRE/ JDK).

Java runtime environment 64 bit