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  1. ,
    Expert tip

    The server rejects all jars that already belong to the server runtime (such as tomcat-**.jar, servlet**.jar). Consider substituting the CORS filter you're using for this one: https://goo.gl/ctQ7Fs

  2. ,

    This is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath. Make sure poi-ooxml library jar is added to your project's build path and you are using the latest version.

Solutions on the web

via Stack Overflow by Abhishek Sharma
, 1 year ago
Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory]
via Stack Overflow by HM.Rajjaz
, 2 years ago
Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory]
via Stack Overflow by Julian Herbold
, 11 months ago
Cannot instantiate class: org.jboss.naming.remote.client.InitialContextFactory [Root exception is java.lang.ClassNotFoundException: org.jboss.naming.remote.client.InitialContextFactory]
via jboss.org by Unknown author, 2 years ago
Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory ]
via theserverside.com by Unknown author, 1 year ago
Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory]
via jboss.org by Unknown author, 1 year ago
Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory ]
javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:674) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307) at javax.naming.InitialContext.init(InitialContext.java:242) at javax.naming.InitialContext.<init>(InitialContext.java:216) at com.tutorialspoint.test.EJBTester.<init>(EJBTester.java:28) at com.tutorialspoint.test.EJBTester.main(EJBTester.java:37)Caused by: java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:278) at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:72) at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:61) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:671) ... 5 more