Trying to install the latest patch for XCOM for Windows 11.6 SP03 and receive LaunchAnywhere error:
"Could not find a valid Java virtual machine to load.
You may need to reinstall a supported Java virtual machine."
Release : 11.6
Component : XCOM Data Transport for Windows
XCOM for Windows 11.6 SP03 and patches no longer distribute Oracle Java with the installer and Java needs to be installed by the user.
The installer searches for the file java.exe using first the directories contained the PATH environment variable and then the Windows Registry.
Below are a few usual registry locations provided by Java vendors. This works well for Oracle/IBM provided Java but not reliable for Open Java installations:
HKLM\SOFTWARE\JavaSoft\Java Development Kit
HKLM\SOFTWARE\JavaSoft\Java Runtime Environment
HKLM\SOFTWARE\IBM\Java2 Runtime Environment
HKLM\SOFTWARE\IBM\Java Development Kit
Hence, it is recommended to set the Java install directory in the PATH variable. The installer may also fail to access the windows registry unless launched with elevated privileges.
If Java is installed and it still cannot be found then the installer can be run with the LAX_VM parameter to force the java.exe to be found i.e.
XCPCNT_XCOMPATCH_SP03_r116nnnnn_64.exe LAX_VM "FULL_PATH_TO_JAVA_BIN_DIRECTORY\java.exe"
Similarly for the initial XCOM install:
XCOM.exe LAX_VM "FULL_PATH_TO_JAVA_BIN_DIRECTORY\java.exe"
CA XCOM™ Data Transport® for Windows 11.6 Service Packs > Release Notes > New Features - see Service Pack 11.6.03 -> Support for Open Java