2608940 - Enterprise Manager <host>:<port:> is offline in Basic Configuration - Error 404

• The Enterprise Manager is reported as offline in the configuration due to a 404 error, and the solution described in KBA 2352112 is already applied:

• In the Solution Manager defaultTrace, the following errors occurs:

• In the IntroscopeEnterpriseManager.log, the following error is raised:

Caused by: java.lang.UnsupportedClassVersionError: com/sap/introscope/SapQueryContextPath has been compiled by a more recent version of the Java Runtime (class file version 51.0), this version of the Java Runtime only recognizes class file versions up to 50.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:739)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:720)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:165)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:554)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:524)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:455)
    ...

• SAP Solution Manager 7.2
• Introscope Enterprise Manager 10.1 and 10.5

com.sap.smd.introscope.em.rest.EmRestGateway.test, Error accessing to Enterprise Manager, com.sap.smd.introscope.em.IntroscopeException: http status code 404, com.sap.sup.admin.wily.jdbc.EMOverview.getQueryEMgrs, All configured Enterprise Managers are offline

, KBA , SV-SMG-DIA-WLY-EMS , Enterprise Manager Setup , Problem