What is "jusched.exe" and how to disable it

March 1, 2009

What is jusched and how to disable it In trying to clear up some system resources, or simply snooping around your system’s Task Manager, you’ve likely come across the “jusched.exe” process.  What exactly is it, and is it safe to delete?  Let’s go over its function in Windows and explain a few things.

The “jusched.exe” process is actually associated with Java, it’s the process that checks automatically whether or not there are updates to any part of the Java software.  The process usually runs constantly in the background and is only in use once a month to check for updates.  The problem, is that the process takes up a considerable amount of resources in terms of memory and CPU usage.  For something that’s only in use once per month, it’s really not necessary to keep it running all the time.

Disabling it is a pretty simple process, but does have its repercussions.  To disable it, open up your Control Panel, and click the Java icon in Windows XP, or click on “Additional Options” in Vista and click on Java.  In either OS, it should bring up the Java Control Panel.  Go to the “Update” tab, and uncheck the box next to “Check For Updates Automatically.”  Upon doing so, an alert box should pop up stating “We Strongly Recommend Letting Java Check For Updates…”  Click “Never Check,” and you should be good to go.  If you’re using Vista, you may have another warning message pop up, but simply choose “This Control Panel Works Correctly.”

Taking these steps will completely disable the “check update” function in Java, as well as the subsequent “jusched.exe” process that’s taking up so much of your resources.  As I said before, doing this has its repercussions.  By disabling the automatic updates for Java, you’ll be missing out on any important security patches, updates and so on.  If you can remember to manually check for updates then you’ll be fine, but most of us will forget immediately.  With Java becoming so prevalent in today’s Web environment, it’s a good idea to keep it as up to date and secure as possible.

If you’re running an older machine, or a machine that’s so loaded down that it’s starting to slow, it might be a good idea to disable the “jusched.exe” process out of necessity, but if you’re system is running fine with it enabled and running in the background, it’s a good idea to leave it be.  Alternatively, both Windows XP and Vista have built-in scheduler applications that can perform the same function as “jusched.exe” without the excessive strain on your system’s valuable resources.

In Vista, type “Task Scheduler” into the search bar under “Start.”  In XP, go to “Start,” “Programs,” “Accessories,” “System Tools,” ‘Scheduled Tasks.”  In both OSs, a window should pop up with all your system’s scheduled tasks.  Click “Add New Task”,” and follow the on-screen instructions.  For the schedule, just run it at some point every month, and when it asks for the “program to start,” simply input the path to Java’s “jusched.exe” file located in the Java directory.  It should look something like: “C:\Program Files\Java\jre1.6.0_01\bin\jucheck.exe,” but with your version of Java instead.

It’s up to you whether or not you want to disable the “jusched.exe” process from running automatically, setup a new Windows-based “scheduled task,” or if you want to disable it altogether, but in the end it depends on your situation and the type of machine your running.  As a rule of thumb, if you can’t notice any major differences while running, I’d leave everything alone.  If you notice a slight slow-down, I would first start by disabling all other known processes and then disable “jusched.exe” and set up a new scheduled task in Windows.  If all else fails, disable it completely and save the strain on your system.

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9 Responses to “What is "jusched.exe" and how to disable it”

  1. lenix:

    i’ve always seen that process and then wondered…but never did research it out.

  2. kyle:

    unticking this box does not prevent jusched.exe from running.

    thanks anyways.

  3. waldi:

    Correct, kyle. Process jusched.exe continues to run on my Vista Home SP2 system and when I return to the Java console to review the update process, whenever I click on the Updates tab it opens to reveal the box checked again.

  4. waldi:

    SOLVED – as long as you have administrator privileges on your system… Vista disallows the disabling of updates via the Java console in control panel (One would think that by now Sun and MS would have sorted this out between them). But if you go to C:\Program Files\Java\jre6\bin\ and right-click the javacpl.exe file, then click on Run as Administrator, the updates window will open and you can disable the updates there… and this time it should permanently kill the jusched.exe process. Remember to manually update Java from time to time…

  5. Baxter:

    There is a work around to get rid of the process jusched.exe while still maintaining the fucntionality of updating your java.

    details here: http://www.groovypost.com/howto/geek-stuff/what-is-jusched-exe-safe-why-running-virus/

  6. Slerte:

    This has annoyed me for a long time. I keep unticking the “check for updates” check box but it never stays unchecked. Finally I disabled it in the registry by setting the EnableJavaUpdate key to 0. PITA

  7. youza:

    No need to mess around with the registry. You can disable it by going to Program Files/Java/jre6/bin and running javapcl.exe as administrator. That way you can untick the “check for updates” box without it ticking itself back as soon as you approve the changes.

  8. bewr:

    Running javapcl.exe as admin on Windows 7 – you don’t get to see the “updates” tab. Sun sucks.

  9. nope:

    running javacpl.exe as admin then disabling didnt work for me on win 7, also.

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