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Windows Thread, blocking minecraft in Technical; has anyone been successful in blocking Minecraft through Windows? I have been struggling to block the JAR files from executing ...
  1. #1

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    blocking minecraft

    has anyone been successful in blocking Minecraft through Windows?

    I have been struggling to block the JAR files from executing as there doesn't seem to be any way to do it apart from blocking the java.exe which is out of the question.

    I have come across this method by Neal Poole https://nealpoole.com/blog/2013/01/h...a-java-applet/ and have been in touch with him via comments but have not yet been successful in implementing a working solution.

    If anyone has suggestions or has used a java blacklist file before please let me know.

    Regards

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    Valyyn's Avatar
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    What about blocking access to the authentication servers?
    (apparently https://authserver.mojang.com)

    From my understanding (I don't have a MC account myself though) the new version introduced a mandatory launcher that you have to log in to.

    Not sure if it'll work, but might be worth a go!

    I ended up just using Impero to block it from running here originally.

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    speckytecky's Avatar
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    We have it listed as a block in Impero but our 'oh so clever' students rename it and still run it!

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    localzuk's Avatar
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    Many of the kids will run pirated versions - which don't need to authenticate.

    Not sure how you'd block it - block all .jar files from their home areas?

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    Valyyn's Avatar
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    Quote Originally Posted by speckytecky View Post
    We have it listed as a block in Impero but our 'oh so clever' students rename it and still run it!
    The rule I've got is:
    *Minecraft Launcher*
    and I've selected "A Window Caption" for what to block - even if they rename the .exe (or .jar), the launcher still has the same title.

    If they run a hacked version with no launcher, wonder if just *Minecraft* for the Window Caption would work?
    Capture.PNG

    Apparently, blocking the .jar files with SRPs doesn't work as it's technically running java.exe then calling the .jar (this is from Googling, not personal experience, so could be wrong!)

    If you don't need java for any courses or anything, maybe you could just block java.exe though?

  6. Thanks to Valyyn from:

    speckytecky (17th July 2013)

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    you cant remove java but do you need java to run .jar files or just for some web sites? You could remove javas association to .jar files?

    re-associate .jar with notepad?

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    Anyone still interested in this?

    I have worked out a solution .... not pretty at all, but it works..... I'm going to write it up and will post a link to the write up once I have completed it.

  9. #8

    speckytecky's Avatar
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    Yes please.

    Quote Originally Posted by Chunks_ View Post
    Anyone still interested in this?

    I have worked out a solution .... not pretty at all, but it works..... I'm going to write it up and will post a link to the write up once I have completed it.

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    So here is the link on how to stop minecraft working in your network environment.

    Like I said not your finest, but its easy to implement and it works !

    Hope it helps.

  11. #10

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    Had to make an edit to the solution ... it didn't work when the users profile area had the name username.domain so instead of using %username% you should be using %userprofile% except for setting the folder permissions where you definitely use %username%. I changed the code on the write up in the link above.



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