topic Re: Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class in Network and Storage Protocols

Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class

mconigliaro — Thu, 05 Jun 2025 07:24:11 GMT

We started getting this Java error in FilerView today. One guy here seems to have resolved it by downgrading to Java 5. Are there any other workarounds?

load: class com/netapp/admin/FilerHTTPConfigUIApplet.class not found.
java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class
    at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Received fatal alert: bad_record_mac
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
    at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
    at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
    at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    ... 7 more
Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class

Re: Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class

palbers — Thu, 10 Sep 2009 17:58:14 GMT

Michael,

Take a look at:

http://now.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=234824

This may provide you another work around without having to downgrade to

a prior version

of Java.

Best Regards,

-paul

For 7.3.2RC1 and later:

http://now.netapp.com/NOW/knowledge/docs/ontap/rel732rc1/html/ontap/sysadmin/frameset.html

Re: Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class

mconigliaro — Thu, 10 Sep 2009 20:42:55 GMT

Disabling SSL worked.

options httpd.admin.ssl.enable off

Thanks!

Re: Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class

netapp_4 — Wed, 04 Nov 2009 14:32:42 GMT

Hi,

Simply disabling secure access as a workaround is not exactly what I would call a solution. I was able to solve the problem this way:

On your Windows box, open the Control Panel and pick "Java". Open the "Advanced" tab and expand "Security". Uncheck "Use TLS 1.0".

Java applets worked fine from that monent on.

Re: Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerHTTPConfigUIApplet.class

danielpr — Sat, 04 Sep 2010 02:45:21 GMT

The problem is due the TLS setting in Java and not with the Data ONTAP configuration. If you have JRE 1.6 and above you need to do the following

To resolve this issue, disable TLS1.0 from Java by doing the following:

Select the following:
Control Panel - > Java - > Advanced Settings Tab - > Security List
Uncheck the TLS1.0 box.
Restart the browser (Kill all instance and start new)

More info : https://now.netapp.com/Knowledgebase/solutionarea.asp?id=kb34698

If you are already in 7.3.2 and above then TLS has been supported in Data ONTAP (options tls.enable) itself .You don’t need to go by the workaround in KB, you can have TLS enabled in Java by keeping ONTAP TLS enabled. NOW online help can be used for helping you to understand and configure TLS can be found from the the following link

http://now.netapp.com/NOW/knowledge/docs/ontap/rel732/html/ontap/rnote/rel_notes/concept/c_oc_rn_feat732-tls-supp-in-filerview.html

Thanks

Daniel