# Set environment variables

If you do not set the **HOME** environment variables, Pentaho does not start correctly. Complete the steps in this topic to ensure that you have set the **HOME** environment variables properly.

1. Set the path of the **PENTAHO\_JAVA\_HOME** variable to the path of your Java installation, as shown:

   `SET PENTAHO_JAVA_HOME=C:\Program Files\Java\jdk11.x.x.x`
2. (Optional) If you are using a JRE, then also set the **JRE\_HOME** home environment variable.
3. Log off and log on again, then verify the variables have been properly set by using a command similar to the following example:

   `ECHO %PENTAHO_JAVA_HOME%`


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