Add property com.sun.security.sasl.digest.utf8 and set to true to configurable-sasl-server-factory [1] elements.add(SimpleConfigurableSaslServerFactory.builder().withName(NAME).withSaslServerFactory( "elytron" ) .addProperty( "com.sun.security.sasl.digest.utf8" , " true " ) .addFilter(SaslFilter.builder().withPatternFilter(saslMechanismName).build()).build()); build wildfly-core: mvn clean install -DskipTests cd wildfly-core/testsuite/elytron mvn clean test -Dtest=DigestMd5MgmtSaslTestCase and you can see this failed tests: Unable to find source-code formatter for language: collapse. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml Failed tests: DigestMd5MgmtSaslTestCase.testCorrectDigestMechPasses:61->AbstractMgmtSaslTestBase.assertDigestMechPassWhoAmI:281->AbstractMgmtSaslTestBase.lambda$assertDigestMechPassWhoAmI$9:281->AbstractMgmtSaslTestBase.assertWhoAmI:244 The whoami operation failed - java.net.ConnectException: WFLYPRT0053: Could not connect to remote: //127.0.0.1:10567. The connection failed DigestMd5MgmtSaslTestCase.testCorrectMechanismPasses:56->AbstractMgmtSaslTestBase.assertMechPassWhoAmI:276->AbstractMgmtSaslTestBase.lambda$assertMechPassWhoAmI$8:276->AbstractMgmtSaslTestBase.assertWhoAmI:244 The whoami operation failed - java.net.ConnectException: WFLYPRT0053: Could not connect to remote: //127.0.0.1:10567. The connection failed [1] https://github.com/wildfly/wildfly-core/blob/3.0.4.Final/testsuite/elytron/src/test/java/org/wildfly/test/integration/elytron/sasl/mgmt/AbstractMgmtSaslTestBase.java#L352