Hello; Altough I have already brought this issue onto the table, I am getting the same issues again. Below tests are passed and failed while running multiple times of TCK. These tests are : First Category : If I run below tests as a seperate TestNG test class, all of them are passed. ProducerMethodLifecycleTest # testCreateReturnsNullIfProducerDoesAndDependent ResolutionByNameTest # testAmbiguousELNamesResolved DuplicateNamePrefixResolutionTest # testDuplicateBeanNamePrefix UnproxyableTest # testInjectionPointWithUnproxyableTypeWhichResolvesToNormalScopedBean Second Caegory: If I run below tests as a seperate TestNG test class, all of them are passed sometimes, failed sometimes. ResolutionByTypeTest # testGenericBeanTypesOnProducerMethod ResolutionByTypeTest # testGenericBeanTypesOnProducerField ResolutionByTypeTest # testGenericBeanTypesOnManagedBean General Observation: At one run this tests have passed, after that I run TCK again, this time some of them are failed! --Gurkan