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How to block Java plug-in on Internet Explorer

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Sharath Kumar
New Update

With a new Java zero-day exploit in the wild detected, security experts are advising Internet users to disable java plug in from their browsers.

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The suggestion seems all relevant as there is now world yet on when Oracle would release a patch.

Here are steps you can follow to disable the Java plug in:

(These steps were derived from advice given in CERT's vulnerability note on CVE 2012-4681)

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  • Open Internet Explorer
  • Type ALT + T to activate the Tools menu and choose Manage Plugins. Choose "All items" from the Show drop-down menu. Disable "Java Plug-in --version number--." It is safe to simply disable all of the items that begin with Java, but be sure to get this one.
  • Close Internet Explorer.
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  • Type WINDOWS + R and type regedit (approve UAC prompt if necessary).
  • Browse to HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\{version}\UseJava2IExplorer and change (Default) to 0. 64-bit Windows users will need to change HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\JavaSoft\Java Plug-in\{version}\UseJava2IExplorer to 0.
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  • Open Notepad (WINDOWS + R and type notepad) and paste the following code into it:

Windows Registry Editor Version 5.00



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400



"Compatibility Flags"=dword:00000400

Click File -> Save As... and call it DisableJava.reg and put it on your Desktop.

Double-click the file on your Desktop and approve any UAC prompts.

  • Now Java should be disabled.
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