How do I set a custom java trust store so Intellij...

# intellij

[August]

How do I set a custom java trust store so Intellij would use it?

I have set (-<http://Djavax.net|Djavax.net>.ssl.trustStore=<home>/cacerts -<http://Djavax.net|Djavax.net>.ssl.trustStorePassword=changeit) in:
• JAVA_OPTS env variable
• idea.vmoptions
• VM options in run
still, it's taken from projects java SDK.

The IntelliJ IDEA 2025.2.2 (Ultimate Edition), Build #IU-252.26199.169, built on September 18, 2025.
updated today, but on previous version, 2025.2.1 the same behaviour.
Adding the ssl debug result in:

javax.net.ssl|DEBUG|53|DefaultDispatcher-worker-12 @call-context#41|2025-09-19 21:40:47.152 CEST|TrustStoreManager.java:156|Inaccessible trust store: /<path>/.sdkman/candidates/java/<version>/lib/security/jssecacerts
javax.net.ssl|DEBUG|53|DefaultDispatcher-worker-12 @call-context#41|2025-09-19 21:40:47.156 CEST|TrustStoreManager.java:112|trustStore is: /<path>/.sdkman/candidates/java/<version>/lib/security/cacerts

I switch a lot between different sdk, and don't want to import all certs to multiply trust stores.

[Tim Hill]

The only way I’ve seen is to set JDK_JAVA_OPTIONS=-<http://Djavax.net|Djavax.net>.ssl.trustStore=<home>/cacerts . I’ve tried setting it in various gradle/maven settings as well, but none of those seem to work

[Tim Hill]

Java will complain at you a bunch about that because it’ll be adding that option to every invocation, but it’s the only way I know

[August]

That actually helped, thank you @Tim Hill 🙏

[August]

JAVA_OPTS I used on Tomcat since forever, things changed a bit over the years, but still I'd say passing it to IDE idea.vmoptions should be recognised. thank you color again.

[Tim Hill]

I had some document a while back that I’ve unfortunately lost that was every possible environment variable that one might need for Java/Gradle/Maven across their different versions. It made me feel like: