There was no JAVA_HOME environment variable set. However there was a CS_JAVA_HOME environment variable which was pointing to ...\jre1.8.0_45. I changed this variable:

I then ran the .bat file you sent:
if defined JAVA_HOME (
set JAVA="%JAVA_HOME%\bin\java.exe"
) else (
for %%I in (java.exe) do set JAVA="%%~$PATH:I"
)
echo %JAVA%
I then ran a modified version:
if defined CS_JAVA_HOME (
set JAVA="%CS_JAVA_HOME%\bin\java.exe"
) else (
for %%I in (java.exe) do set JAVA="%%~$PATH:I"
)
echo %JAVA%
After that I ran logstash-plugin list with the following disappointing result:
What now?

