java -Dhttps.protocols=TLSv1.1,TLSv1.2 -jar flex_sdk_installer-4.0.jar If the automated installer continues to show "Patch listing error flex 3", bypass it entirely. Here is how to manually apply the Flex 3 patch set.
ant -f frameworks/install-sdk-tasks.xml -Dpatch.list=3 The Apache Flex SDK installer is notoriously sensitive to Java versions. Java 11+ breaks the patch listing parser. patch listing error flex 3
mvn clean install -DskipPatchValidation=true Many developers confuse this error with other Flex-related issues. Let us clarify: java -Dhttps
Introduction If you are a legacy enterprise developer working with Adobe Flex or the more recent Apache Flex SDK, you have likely encountered the cryptic and frustrating "Patch Listing Error Flex 3" . This error typically surfaces during the SDK installation, compilation, or when applying over-the-air updates to a Flex application. Java 11+ breaks the patch listing parser
java -jar flex_sdk_installer-4.0.jar Because Adobe’s old Flex 3 patch server ( http://fpdownload.adobe.com ) redirects to HTTPS with a modern certificate, older Java runtimes fail. Solution: Manually override the patch URL.