4

Minecraft crashes after I click "Login" at the Minecraft Launcher Window. The credentials are valid, and minecraft.net and notch are up because I have tried to launch minecraft on another computer and it works. Things that I have tried and haven't worked:

  • Reinstalled java
  • Installed Java SE7, JDK7, JRE7
  • Reinstalled minecraft, forced update
  • Deleted .minecraft and deleted Minecraft.exe
  • Restarted the computer
  • Forced minecraft to update
  • Checked my internet connection
  • Deleted everything to do with minecraft, including Windows PF files and reinstalled minecraft

Interesting Observations

I noticed that the command that the minecraft.jar file is being run with says that it can have up to 1024mb of ram. I only have ~500mb of ram, so it would be referencing pointers in an unknown location. I also notice a gl issue, which I'm not really sure how to fix.

I have no idea what to do next. After Minecraft crashes, it generates a file named hs_err_pd(random number) which has some interesting crash information. The contents of the file is posted below (with personal information starred out):

Update

The issue does not have to do with Java 7. Updated log file.

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x5278b517, pid=2480, tid=228
#
# JRE version: 6.0_26-b03
# Java VM: Java HotSpot(TM) Client VM (20.1-b02 mixed mode windows-x86 )
# Problematic frame:
# C  [atioglx1.dll+0x3fb517]
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

---------------  T H R E A D  ---------------

Current thread (0x49e4c400):  JavaThread "Minecraft main thread" daemon [_thread_in_native, id=228, stack(0x49c30000,0x49c80000)]

siginfo: ExceptionCode=0xc0000005, reading address 0x000000be

Registers:
EAX=0x00000000, EBX=0x00000000, ECX=0x00000000, EDX=0x49c7f4f0
ESP=0x49c7f4b0, EBP=0x52a58040, ESI=0x00000000, EDI=0x52a8e0a8
EIP=0x5278b517, EFLAGS=0x00010206

Top of Stack: (sp=0x49c7f4b0)
0x49c7f4b0:   529de368 00000000 42353434 44324645
0x49c7f4c0:   30305c7d 4f5c3030 476e6570 72505c4c
0x49c7f4d0:   000000f0 00000065 00000000 00000000
0x49c7f4e0:   00000000 00000000 527abc8b 49c7f518
0x49c7f4f0:   00000000 00000608 00000000 00008000
0x49c7f500:   00001000 00000000 00000000 00000000
0x49c7f510:   00000000 00000000 49c7f474 49c7f55c
0x49c7f520:   49c7f55c 7c90e920 7c910060 ffffffff 

Instructions: (pc=0x5278b517)
0x5278b4f7:   e8 74 f5 ff ff b8 01 00 00 00 5f 5d 5e 5b 83 c4
0x5278b507:   30 c2 04 00 cc cc cc cc cc 83 ec 30 53 56 8b f1
0x5278b517:   8a 86 be 00 00 00 84 c0 8b da 74 1c e8 68 07 00
0x5278b527:   00 8a 86 be 00 00 00 84 c0 74 0d 5e b8 c8 00 00 


Register to memory mapping:

EAX=0x00000000 is an unknown value
EBX=0x00000000 is an unknown value
ECX=0x00000000 is an unknown value
EDX=0x49c7f4f0 is pointing into the stack for thread: 0x49e4c400
ESP=0x49c7f4b0 is pointing into the stack for thread: 0x49e4c400
EBP=0x52a58040 is an unknown value
ESI=0x00000000 is an unknown value
EDI=0x52a8e0a8 is an unknown value


Stack: [0x49c30000,0x49c80000],  sp=0x49c7f4b0,  free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [atioglx1.dll+0x3fb517]  atiPPHSN+0x356267

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j  org.lwjgl.opengl.WindowsContextImplementation.nCreate(Ljava/nio/ByteBuffer;Ljava/nio/IntBuffer;Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;+0
j  org.lwjgl.opengl.WindowsContextImplementation.create(Lorg/lwjgl/opengl/PeerInfo;Ljava/nio/IntBuffer;Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;+10
j  org.lwjgl.opengl.Context.<init>(Lorg/lwjgl/opengl/PeerInfo;Lorg/lwjgl/opengl/ContextAttribs;Lorg/lwjgl/opengl/Context;)V+104
j  org.lwjgl.opengl.Display.create(Lorg/lwjgl/opengl/PixelFormat;Lorg/lwjgl/opengl/Drawable;Lorg/lwjgl/opengl/ContextAttribs;)V+88
j  org.lwjgl.opengl.Display.create(Lorg/lwjgl/opengl/PixelFormat;)V+9
j  org.lwjgl.opengl.Display.create()V+13
j  net.minecraft.client.Minecraft.a()V+135
j  net.minecraft.client.Minecraft.run()V+6
j  java.lang.Thread.run()V+11
v  ~StubRoutines::call_stub

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )
=>0x49e4c400 JavaThread "Minecraft main thread" daemon [_thread_in_native, id=228, stack(0x49c30000,0x49c80000)]
  0x49e4cc00 JavaThread "Timer hack thread" daemon [_thread_blocked, id=1168, stack(0x49b80000,0x49bd0000)]
  0x48ff4400 JavaThread "Keep-Alive-Timer" daemon [_thread_blocked, id=1608, stack(0x49570000,0x495c0000)]
  0x003b6800 JavaThread "DestroyJavaVM" [_thread_blocked, id=3492, stack(0x009c0000,0x00a10000)]
  0x490ac400 JavaThread "TimerQueue" daemon [_thread_blocked, id=2700, stack(0x49510000,0x49560000)]
  0x49068400 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=3992, stack(0x494c0000,0x49510000)]
  0x4903b800 JavaThread "AWT-Windows" daemon [_thread_in_native, id=2284, stack(0x49310000,0x49360000)]
  0x4903a400 JavaThread "AWT-Shutdown" [_thread_blocked, id=1032, stack(0x492c0000,0x49310000)]
  0x49037000 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=3456, stack(0x49260000,0x492b0000)]
  0x48cdf400 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=3980, stack(0x48f30000,0x48f80000)]
  0x48cdc800 JavaThread "C1 CompilerThread0" daemon [_thread_blocked, id=3968, stack(0x48ee0000,0x48f30000)]
  0x48cd7c00 JavaThread "Attach Listener" daemon [_thread_blocked, id=2500, stack(0x48e90000,0x48ee0000)]
  0x48cd6400 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=2496, stack(0x48e40000,0x48e90000)]
  0x48cc9800 JavaThread "Finalizer" daemon [_thread_blocked, id=3056, stack(0x48df0000,0x48e40000)]
  0x48cc5000 JavaThread "Reference Handler" daemon [_thread_blocked, id=3296, stack(0x48da0000,0x48df0000)]

Other Threads:
  0x48cc1000 VMThread [stack: 0x48d50000,0x48da0000] [id=740]
  0x48cea000 WatcherThread [stack: 0x48f80000,0x48fd0000] [id=3964]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
 def new generation   total 157248K, used 79087K [0x02a90000, 0x0d530000, 0x17fe0000)
  eden space 139776K,  56% used [0x02a90000, 0x077cbc10, 0x0b310000)
  from space 17472K,   0% used [0x0b310000, 0x0b310000, 0x0c420000)
  to   space 17472K,   0% used [0x0c420000, 0x0c420000, 0x0d530000)
 tenured generation   total 349568K, used 0K [0x17fe0000, 0x2d540000, 0x42a90000)
   the space 349568K,   0% used [0x17fe0000, 0x17fe0000, 0x17fe0200, 0x2d540000)
 compacting perm gen  total 13056K, used 12886K [0x42a90000, 0x43750000, 0x46a90000)
   the space 13056K,  98% used [0x42a90000, 0x43725b78, 0x43725c00, 0x43750000)
No shared spaces configured.

Code Cache  [0x00a10000, 0x00bc0000, 0x02a10000)
 total_blobs=1031 nmethods=797 adapters=169 free_code_cache=31814784 largest_free_block=0

Dynamic libraries:
0x00400000 - 0x00424000     C:\Program Files\Java\jre6\bin\javaw.exe
0x7c900000 - 0x7c9b2000     C:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c8f6000     C:\WINDOWS\system32\kernel32.dll
0x77dd0000 - 0x77e6b000     C:\WINDOWS\system32\ADVAPI32.dll
0x77e70000 - 0x77f03000     C:\WINDOWS\system32\RPCRT4.dll
0x77fe0000 - 0x77ff1000     C:\WINDOWS\system32\Secur32.dll
0x7e410000 - 0x7e4a1000     C:\WINDOWS\system32\USER32.dll
0x77f10000 - 0x77f59000     C:\WINDOWS\system32\GDI32.dll
0x76390000 - 0x763ad000     C:\WINDOWS\system32\IMM32.DLL
0x629c0000 - 0x629c9000     C:\WINDOWS\system32\LPK.DLL
0x74d90000 - 0x74dfb000     C:\WINDOWS\system32\USP10.dll
0x7c340000 - 0x7c396000     C:\Program Files\Java\jre6\bin\msvcr71.dll
0x6d7f0000 - 0x6da9f000     C:\Program Files\Java\jre6\bin\client\jvm.dll
0x76b40000 - 0x76b6d000     C:\WINDOWS\system32\WINMM.dll
0x6bd00000 - 0x6bd0d000     C:\WINDOWS\system32\SYNCOR11.DLL
0x6d7a0000 - 0x6d7ac000     C:\Program Files\Java\jre6\bin\verify.dll
0x6d320000 - 0x6d33f000     C:\Program Files\Java\jre6\bin\java.dll
0x76bf0000 - 0x76bfb000     C:\WINDOWS\system32\PSAPI.DLL
0x6d7e0000 - 0x6d7ef000     C:\Program Files\Java\jre6\bin\zip.dll
0x6d000000 - 0x6d14b000     C:\Program Files\Java\jre6\bin\awt.dll
0x73000000 - 0x73026000     C:\WINDOWS\system32\WINSPOOL.DRV
0x77c10000 - 0x77c68000     C:\WINDOWS\system32\msvcrt.dll
0x774e0000 - 0x7761e000     C:\WINDOWS\system32\ole32.dll
0x773d0000 - 0x774d3000     C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.6028_x-ww_61e65202\COMCTL32.dll
0x77f60000 - 0x77fd6000     C:\WINDOWS\system32\SHLWAPI.dll
0x5d090000 - 0x5d12a000     C:\WINDOWS\system32\comctl32.dll
0x5ad70000 - 0x5ada8000     C:\WINDOWS\system32\uxtheme.dll
0x74720000 - 0x7476c000     C:\WINDOWS\system32\MSCTF.dll
0x755c0000 - 0x755ee000     C:\WINDOWS\system32\msctfime.ime
0x7c9c0000 - 0x7d1d7000     C:\WINDOWS\system32\shell32.dll
0x6d230000 - 0x6d27f000     C:\Program Files\Java\jre6\bin\fontmanager.dll
0x6d600000 - 0x6d613000     C:\Program Files\Java\jre6\bin\net.dll
0x71ab0000 - 0x71ac7000     C:\WINDOWS\system32\WS2_32.dll
0x71aa0000 - 0x71aa8000     C:\WINDOWS\system32\WS2HELP.dll
0x6d620000 - 0x6d629000     C:\Program Files\Java\jre6\bin\nio.dll
0x71a50000 - 0x71a8f000     C:\WINDOWS\System32\mswsock.dll
0x76f20000 - 0x76f47000     C:\WINDOWS\system32\DNSAPI.dll
0x76d60000 - 0x76d79000     C:\WINDOWS\system32\iphlpapi.dll
0x76fb0000 - 0x76fb8000     C:\WINDOWS\System32\winrnr.dll
0x76f60000 - 0x76f8c000     C:\WINDOWS\system32\WLDAP32.dll
0x64000000 - 0x64025000     C:\Program Files\Bonjour\mdnsNSP.dll
0x76fc0000 - 0x76fc6000     C:\WINDOWS\system32\rasadhlp.dll
0x662b0000 - 0x66308000     C:\WINDOWS\system32\hnetcfg.dll
0x71a90000 - 0x71a98000     C:\WINDOWS\System32\wshtcpip.dll
0x68000000 - 0x68036000     C:\WINDOWS\system32\rsaenh.dll
0x769c0000 - 0x76a74000     C:\WINDOWS\system32\USERENV.dll
0x5b860000 - 0x5b8b5000     C:\WINDOWS\system32\netapi32.dll
0x605d0000 - 0x605d9000     C:\WINDOWS\System32\mslbui.dll
0x6d780000 - 0x6d788000     C:\Program Files\Java\jre6\bin\sunmscapi.dll
0x77a80000 - 0x77b15000     C:\WINDOWS\system32\CRYPT32.dll
0x77b20000 - 0x77b32000     C:\WINDOWS\system32\MSASN1.dll
0x4a220000 - 0x4a28b000     C:\Documents and Settings\***********\Application Data\.minecraft\bin\natives\lwjgl.dll
0x5ed00000 - 0x5edcc000     C:\WINDOWS\system32\OPENGL32.dll
0x68b20000 - 0x68b40000     C:\WINDOWS\system32\GLU32.dll
0x73760000 - 0x737ab000     C:\WINDOWS\system32\DDRAW.dll
0x73bc0000 - 0x73bc6000     C:\WINDOWS\system32\DCIMAN32.dll
0x77c00000 - 0x77c08000     C:\WINDOWS\system32\VERSION.dll
0x6d350000 - 0x6d356000     C:\Program Files\Java\jre6\bin\jawt.dll
0x69000000 - 0x694ff000     C:\WINDOWS\system32\atioglxx.dll
0x52390000 - 0x52a08000     C:\WINDOWS\system32\atioglx1.dll

VM Arguments:
jvm_args: -Xms512m -Xmx1024m 
java_command: C:\Documents and Settings\******************\Desktop\Minecraft.exe
Launcher Type: SUN_STANDARD

Environment Variables:
CLASSPATH=.;C:\Program Files\Java\jre6\lib\ext\QTJava.zip
PATH=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\PC-Doctor for Windows\services;C:\Program Files\ATI Technologies\ATI Control Panel;C:\WINDOWS\system32\WindowsPowerShell\v1.0;C:\WINDOWS\system32\WindowsPowerShell\v1.0;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Java\jre6\bin
USERNAME=********
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 15 Model 2 Stepping 9, GenuineIntel



---------------  S Y S T E M  ---------------

OS: Windows XP Build 2600 Service Pack 3

CPU:total 2 (1 cores per cpu, 2 threads per core) family 15 model 2 stepping 9, cmov, cx8, fxsr, mmx, sse, sse2, ht

Memory: 4k page, physical 523244k(80324k free), swap 1278552k(391804k free)

vm_info: Java HotSpot(TM) Client VM (20.1-b02) for windows-x86 JRE (1.6.0_26-b03), built on May  4 2011 00:50:59 by "java_re" with MS VC++ 7.1 (VS2003)

time: Mon Aug 08 16:10:07 2011
elapsed time: 31 seconds
4
  • 5
    "so it would be referencing pointers in an unknown location" -- no. Just because you tell it it's allowed to use 1024 MB doesn't mean it ignores allocation errors when it runs out of space and creates invalid addresses out of thin air to reference. For all I know it wouldn't even matter, Windows would just give it space in the page file. Commented Aug 8, 2011 at 18:50
  • "EXCEPTION_ACCESS_VIOLATION" I thought meant that it tried to create something out of bounds.
    – alexyorke
    Commented Aug 8, 2011 at 18:55
  • If a program writes to invalid memory (tries to create something) it can result in this error, you're right. But to write to invalid memory it has to use an address -- and a bad address is always the result of a bug or (rarely) corruption. It doesn't happen when you run out of memory unless you do some stuff that is essentially impossible in Java, so Minecraft wouldn't do it. Commented Aug 8, 2011 at 19:11
  • You see, I am having the same problem. I am using windows 7 and I just checked my RAM and there is 5.80 GB of ram so that eliminates the first answer, i am not very good at all this computer maintenance and binary and such so can I ask, whoever finds this and is good at this stuff, you is it a problem with my drivers or if not something else?
    – user19094
    Commented Jan 28, 2012 at 20:57

5 Answers 5

14

Let's look at what is happening: Minecraft is trying to do something which returns 0xc0000005.

In ntstatus.h, a list of error code definitions, 0xc0000005 is STATUS_ACCESS_VIOLATION.

MSDN - Analyze Crashes to Find Security Vulnerabilities in Your Apps reports:

Access violation exceptions (STATUS_ACCESS_VIOLATION) are generated by modern processors when a memory access caused by an instruction or program execution does not satisfy certain conditions defined by the processor architecture or memory management unit structures.

So, we now know that Minecraft does something that causes invalid memory access.


But, what exactly is Minecraft doing?

j  org.lwjgl.opengl.WindowsContextImplementation.nCreate(Ljava/nio/ByteBuffer;Ljava/nio/IntBuffer;Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;+0
j  org.lwjgl.opengl.WindowsContextImplementation.create(Lorg/lwjgl/opengl/PeerInfo;Ljava/nio/IntBuffer;Ljava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;+10
j  org.lwjgl.opengl.Context.<init>(Lorg/lwjgl/opengl/PeerInfo;Lorg/lwjgl/opengl/ContextAttribs;Lorg/lwjgl/opengl/Context;)V+104
j  org.lwjgl.opengl.Display.create(Lorg/lwjgl/opengl/PixelFormat;Lorg/lwjgl/opengl/Drawable;Lorg/lwjgl/opengl/ContextAttribs;)V+88

Here we see, Minecraft tries to allocate an OpenGL Device Context buffer in memory.

The thread mentioned by Ben Blank has a different stack trace and thus is irrelevant.


We first have to get more knowledge about your memory, which you gave:

I noticed that the command that the minecraft.jar file is being run with says that it can have up to 1024mb of ram. I only have ~500mb of ram, so it would be referencing pointers in an unknown location. I also notice a gl issue, which I'm not really sure how to fix.

Given that low amount of memory, I'm going to guess that your graphics card uses 128 MB shared memory which means that it uses RAM memory to operate. I'm guessing that your Windows uses another 100 MB. There is only 250 MB of memory remaining for Minecraft, and your page file.


Minecraft uses from 512 MB to 1 GB, consider that playing Minecraft will cause disk trashing.

VM Arguments:
jvm_args: -Xms512m -Xmx1024m 


So, now, where does the problem lie?

"so it would be referencing pointers in an unknown location" -- no. Just because you tell it it's allowed to use 1024 MB doesn't mean it ignores allocation errors when it runs out of space and creates invalid addresses out of thin air to reference. For all I know it wouldn't even matter, Windows would just give it space in the page file. - Matthew Read

This comment on the question is not 100% correct, there are exceptions that don't use the page file.

Exactly, OpenGL Device Context buffers must be in RAM; the solution is to buy more RAM.

I doubt if 1 GB will do the job given that Minecraft can use up to 1 GB; better to be safe than sorry and get 2 GB to avoid future problems. This also makes sure you don't experience disk trashing to the page file, which can have a great impact on the performance...

Or well, I could be all wrong and it could be a driver problem. But seriously, 512 MB isn't enough...

3
  • For some reason it crashes on every pc I use it on; the pcs could have the low ram issue. Strangely, every Mac I use it on, despite being a little slow at times, never ever crashes.
    – alexyorke
    Commented Aug 10, 2011 at 13:35
  • Can you please tell me how do i give full access to java for my computer?I'm using Microsoft Security Essentials.
    – user17691
    Commented Jan 3, 2012 at 20:03
  • @Nikola: I'm confused what over your virus scanner has to do with Java. Java should not have full access on your computer, that would impose a security risk. Your virus scanner should however not be blocking Java unless you were executing malicious code. Are you trying to crack Minecraft? Commented Jan 3, 2012 at 23:59
2

Have you successfully run Minecraft with a previous version of the JRE? There is a nasty bug in Java 7 that is not patched that can cause some pretty terrible things to happen. See what happens if you uninstall JRE7 and use JRE6 instead

5
  • Minecraft has worked before, as I remember. I'll try JRE6. Do I need to also install JDK 6?
    – alexyorke
    Commented Aug 8, 2011 at 18:26
  • 1
    Interestingly, the bug is present in v6 -- but the flags that enable the bug are disabled by default instead of enabled. Commented Aug 8, 2011 at 18:47
  • Didn't work. Same error.
    – alexyorke
    Commented Aug 8, 2011 at 19:12
  • @Alexy Could you update the bug log in the question? Just so no one else wastes time thinking it might be Java 7 related. (And I missed your question above -- you don't need the JDK.) Commented Aug 8, 2011 at 19:14
  • Yep, I just updated my question
    – alexyorke
    Commented Aug 8, 2011 at 19:17
2

From the stack trace it looks like it crashes when OpenGL tries to create something. So I would guess it's a problem with your video drivers. Try uninstalling them, rebooting, then installing the latest version for your video card model from the manufacturer's website.

3
  • If I uninstall my video drivers, how will I be able to install them again if I can't see anything?
    – alexyorke
    Commented Aug 8, 2011 at 19:17
  • 2
    @Alexy13 Windows will use default drivers that do the basics, no worries. If you're using an older version of Windows (XP or earlier) the default drivers occasionally don't kick in properly, but you can counter that by starting Windows in Safe Mode if needed. Commented Aug 8, 2011 at 19:29
  • Ohhh! I completely forgot about that, sorry. Since I'm using another persons computer (I didnt specify that in my question) I don't think I'm allowed to remove/update drivers :(
    – alexyorke
    Commented Aug 10, 2011 at 13:33
2

Looking at the DLL which is triggering the access violation, I was able to find a thread on the JogAmp forum which appears to be discussing the same issue. (JogAmp is a multimedia library similar to JLWGL, which Minecraft uses.)

It looks like the root problem is that ATI's XP drivers make incorrect assumptions about the capabilities of "older" cards. (They don't mention how "old" is too old.) ATI doesn't appear to have fixed the problem, so the JogAmp devs worked around it themselves. Presumably, the JLWGL folks could do the same, but that wouldn't get you playing Minecraft very soon.

There are a few other options, however. Not great options, but you might find them workable:

  1. As it sounds like you've played Minecraft on this computer before, it may well only be newer video drivers that cause the problem. Downgrading your drivers (though again, it isn't clear how "old" they would need to be) may work as well.
  2. The problem does not appear to occur on Windows 7.
  3. Only certain video chipsets are affected. Getting a new card (or even just a different card, as long as it isn't the same model) should work.
1
  • This could still be a possibility, could it be that the JLWGL incorrectly handles low memory conditions? +1 Commented Jan 4, 2012 at 0:05
1

NOTE: Before you read this, just to let you know, I am not that good with all the techy, codey, error stuff shown above. This is just the way I fixed my problems with this error, and it might apply to others, too.

But Seriously, I was able to fix this by changing options in my antivirus software. I have avast! Antivirus, and they came out with an update for internet surfing protection and you could get a 1 month trial for free. So I was using that and Java just happens to spaz out on me and not work. Just recently, I realized that my antivirus wasn't giving Java the enough access to my computer: This picture was taken after I fixed the settings.

So pretty much just check your firewall or antivirus and see if it gives Java full privileges.

I'm not sure if this is your fix as this error has many different problem sources.

PS: I'm using the online version of Java

1
  • In OPs case, Minecraft was crashing when creating a Display Context, this is irrelevant from firewall settings. However, thank you for finding information that could possibly help others. +1 Commented Jan 4, 2012 at 0:03

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