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New Member

Unable to start ASDM version 1.5(50)

I recently upgraded Java to JRE version 1.7.0 and now when I try to login to the ASA 5510, I get the following message in the java console log.

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: cannot be cast to

  at,X509ExtendedDeployTrustManager.<init>(Unknown Source)

I have attached the log file (2 pages).

Everyone's tags (1)
Cisco Employee

Unable to start ASDM version 1.5(50)

Hi Tom,

ASDM is not currently supported with JAVA version 7. The exception you see above is typically generated. I suggest you downgrade java version to 6.

An enhancement request has been files for this:

You will be able to view this bug after 24 hours.

Hope this helps!



P.S. Please mark this question as resoved if it has been answered. Do rate helpful posts. Thanks!

New Member

Thank you this fixed my

Thank you this fixed my problem also.

New Member

Re: Unable to start ASDM version 1.5(50)

Quick workaround is to change your ASDM launcher shortcut to point to Java 6 which may well still be on your client. Assuming it's Windows 7, look at the Control Panel -> Programs and Features, and you'll probably find a few different versions of Java there. Typically, the ASDM launcher shortcut target will end up looking something like this:

"C:\Program Files\Java\jre6\bin\javaw.exe" -Xms64m -Xmx512m -Dsun.swing.enableImprovedDragGesture=true -classpath lzma.jar;jploader.jar;asdm-launcher.jar;retroweaver-rt-2.0.jar

New Member

Re: Unable to start ASDM version 1.5(50)

Thanks Steve, your workaround works for me.

I found Java 6 and made a shortcut to it with your stuff added:

Target: "C:\Program Files (x86)\Java\jre6\bin\javaw.exe" -Xms64m -Xmx512m -Dsun.swing.enableImprovedDragGesture=true -classpath lzma.jar;jploader.jar;asdm-launcher.jar;retroweaver-rt-2.0.jar

Start in: "C:\Program Files (x86)\Cisco Systems\ASDM\"

So I can keep running Chrome and the latest version of Java elsewhere.  I hope that is useful to others as well

New Member

Unable to start ASDM version 1.5(50)


    Thank you EVER so much for your assistance!  I have been battling with this for two days; when I saw this particular thread the problem was resolved in minutes.  Again, my thanks.

Re: Unable to start ASDM version 1.5(50)

Hi Bro

You could refer to

Warm regards, Ramraj Sivagnanam Sivajanam Technical Specialist/Service Delivery Manager – Managed Service Department