quarkusio/quarkus · error · MojoExecutionException

Failed to list extensions

Error message

Failed to list extensions

What it means

ListExtensionsMojo (`mvn quarkus:list-extensions`) lists extensions available in the configured registry for the project's platform. Any exception while fetching/rendering that list is wrapped in this MojoExecutionException.

Source

Thrown at devtools/maven/src/main/java/io/quarkus/maven/ListExtensionsMojo.java:79

                    .search(searchPattern)
                    .category(category)
                    .installed(installed);
            listExtensions.execute();

            if (DEFAULT_FORMAT.equalsIgnoreCase(format)) {
                log.info("");
                log.info(ListExtensions.MORE_INFO_HINT, "-Dformat=full");
            }
            if (!installed && (category == null || category.isBlank())) {
                log.info("");
                log.info(ListExtensions.FILTER_HINT, "-Dcategory=\"categoryId\"");
            }
            log.info("");
            log.info(ListExtensions.ADD_EXTENSION_HINT,
                    "pom.xml", "./mvnw quarkus:add-extension -Dextensions=\"artifactId\"");

        } catch (Exception e) {
            throw new MojoExecutionException("Failed to list extensions", e);
        }
    }
}

View on GitHub (pinned to e1c734241f)

Solutions

1. Confirm the platform BOM version exists and matches the plugin version
2. Check network/proxy access to the registry
3. Run with -e and read the cause chain for the failing artifact/URL
4. Refresh metadata with -U
5. Align quarkus.platform.version and quarkus-maven-plugin versions

Example fix

// before
<quarkus-maven-plugin.version>2.16.0</quarkus-maven-plugin.version> with platform 3.x
// after
<quarkus-maven-plugin.version>3.2.9.Final</quarkus-maven-plugin.version> matching platform 3.2.9.Final

// align versions before invoking
mvn help:evaluate -Dexpression=quarkus.platform.version -q -DforceStdout
mvn help:evaluate -Dexpression=quarkus-maven-plugin.version -q -DforceStdout
// both must match

try {
    // mvn quarkus:list-extensions
} catch (MojoExecutionException e) {
    log.error("Extension listing failed: " + e.getCause().getMessage());
}

When it happens

Trigger: Running `mvn quarkus:list-extensions` when registry lookup fails, the platform BOM is unresolvable, or application model resolution throws.

Common situations: Platform version pinned to an unpublished release; offline build machine; registry returning HTTP errors; version mismatch between quarkus-maven-plugin and platform BOM.

Related errors

• Unable to add extensions
• Failed to resolve Quarkus extension catalog
• The project was created but (some of) the requested extensio
• Failed to resolve the extension catalog for stream '${stream
• Failed to resolve the available updates

AI-assisted analysis of quarkusio/quarkus@e1c734241f (2026-09-05). Data as JSON: /api/errors/8d4da8c144e31a39. Report an issue: GitHub.