If you do not have write access to the IntelliJ IDEA configuration directory, you can add the IDEA_VM_OPTIONS environment variable to specify the location of the file with your preferred JVM options. If you cannot start IntelliJ IDEA, manually copy the default file with JVM options to the IntelliJ IDEA configuration directory. If you do not have any project open, on the Welcome screen, click Configure and then Edit Custom VM Options. Configure JVM optionsĭo one of the following to create a copy of the default file with JVM options in the configuration directory that will override the original file:įrom the main menu, select Help | Edit Custom VM Options. Moreover, in case of macOS, editing this file violates the application signature. Do not change JVM options in the default file, because it is replaced when IntelliJ IDEA is updated.