Bonjours je vous poste aujourd'hui mon probléme car il est étrange. En effet j'ai installer windows 10 il y à quelques temps et jusqu'a la tout marcher bien cependant j'ai voulu installer forge 1.8 sur mon minecraft (Avec Windows 7 tout etait parfait) et là une fois installer impossible de me connecter à des serveurs minecraft ! Quand j'enleve forge pour mettre la version 1.8 normal tout va bien je peux me connecter normalement. Dans mon forge il n'y à aucun mod.

Voici les logs du launcher :

[22:57:26] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[22:57:26] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[22:57:26] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[22:57:26] [main/INFO] [FML]: Forge Mod Loader version 8.99.205.1502 for Minecraft 1.8 loading
[22:57:26] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_51, running on Windows 8.1:amd64:6.3, installed at C:\Program Files\Java\jre1.8.0_51
[22:57:26] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[22:57:26] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[22:57:26] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[22:57:26] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[22:57:26] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[22:57:28] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[22:57:28] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[22:57:28] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[22:57:28] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[22:57:28] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
[22:57:28] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
[22:57:28] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[22:57:31] [Client thread/INFO]: Setting user: Witrem
[22:57:33] [Client thread/INFO]: LWJGL Version: 2.9.1
[22:57:34] [Client thread/INFO] [STDOUT]: [net.minecraftforge.fml.client.SplashProgress:start:235]: ---- Minecraft Crash Report ----
// Why is it breaking 

Time: 07/08/15 22:57
Description: Loading screen debug info

This is just a prompt for computer specs to be printed. THIS IS NOT A ERROR


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.8
	Operating System: Windows 8.1 (amd64) version 6.3
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 71822968 bytes (68 MB) / 218255360 bytes (208 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: 
	Loaded coremods (and transformers): 
	GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.2.12217 Compatibility Profile Context 12.104.0.0' Renderer: 'AMD Radeon HD 7900 Series'
[22:57:34] [Client thread/INFO] [MinecraftForge]: Attempting early MinecraftForge initialization
[22:57:34] [Client thread/INFO] [FML]: MinecraftForge v11.14.3.1502 Initialized
[22:57:34] [Client thread/INFO] [FML]: Replaced 204 ore recipies
[22:57:34] [Client thread/INFO] [MinecraftForge]: Completed early MinecraftForge initialization
[22:57:34] [Client thread/INFO] [FML]: Found 0 mods from the command line. Injecting into mod discoverer
[22:57:34] [Client thread/INFO] [FML]: Searching C:\Users\Alexis\AppData\Roaming\.minecraft\mods for mods
[22:57:36] [Client thread/INFO] [FML]: Forge Mod Loader has identified 3 mods to load
[22:57:36] [Client thread/INFO] [FML]: Attempting connection with missing mods [mcp, FML, Forge] at CLIENT
[22:57:36] [Client thread/INFO] [FML]: Attempting connection with missing mods [mcp, FML, Forge] at SERVER
[22:57:36] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge
[22:57:36] [Client thread/INFO] [FML]: Processing ObjectHolder annotations
[22:57:36] [Client thread/INFO] [FML]: Found 384 ObjectHolder annotations
[22:57:36] [Client thread/INFO] [FML]: Identifying ItemStackHolder annotations
[22:57:36] [Client thread/INFO] [FML]: Found 0 ItemStackHolder annotations
[22:57:36] [Client thread/INFO] [FML]: Configured a dormant chunk cache size of 0
[22:57:36] [Client thread/INFO] [FML]: Applying holder lookups
[22:57:36] [Client thread/INFO] [FML]: Holder lookups applied
[22:57:36] [Client thread/INFO] [FML]: Injecting itemstacks
[22:57:36] [Client thread/INFO] [FML]: Itemstack injection complete
[22:57:37] [Sound Library Loader/INFO]: Starting up SoundSystem...
[22:57:37] [Thread-9/INFO]: Initializing LWJGL OpenAL
[22:57:37] [Thread-9/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
AL lib: (EE) MMDevApiOpenPlayback: Device init failed: 0x80004005
AL lib: (EE) MMDevApiOpenPlayback: Device init failed: 0x80004005
[22:57:37] [Thread-9/ERROR]: Error in class 'LibraryLWJGLOpenAL'
[22:57:37] [Thread-9/ERROR]: Unable to initialize OpenAL.  Probable cause: OpenAL not supported.
[22:57:37] [Thread-9/WARN]: ERROR MESSAGE:
[22:57:37] [Thread-9/INFO]: Could not locate OpenAL library.
[22:57:37] [Thread-9/WARN]: STACK TRACE:
[22:57:37] [Thread-9/INFO]: org.lwjgl.openal.AL.create(AL.java:151)
[22:57:37] [Thread-9/INFO]: org.lwjgl.openal.AL.create(AL.java:102)
[22:57:37] [Thread-9/INFO]: org.lwjgl.openal.AL.create(AL.java:201)
[22:57:37] [Thread-9/INFO]: paulscode.sound.libraries.LibraryLWJGLOpenAL.init(LibraryLWJGLOpenAL.java:164)
[22:57:37] [Thread-9/INFO]: paulscode.sound.SoundSystem.CommandNewLibrary(SoundSystem.java:1576)
[22:57:37] [Thread-9/INFO]: paulscode.sound.SoundSystem.CommandQueue(SoundSystem.java:2572)
[22:57:37] [Thread-9/INFO]: paulscode.sound.CommandThread.run(CommandThread.java:121)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.net.UnknownHostException: files.minecraftforge.net
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.net.PlainSocketImpl.connect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.net.SocksSocketImpl.connect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.net.Socket.connect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.net.Socket.connect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.NetworkClient.doConnect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.http.HttpClient.openServer(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.http.HttpClient.openServer(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.http.HttpClient.<init>(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.http.HttpClient.New(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.http.HttpClient.New(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.security.AccessController.doPrivileged(Native Method)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.security.AccessController.doPrivileged(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.access$200(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection$9.run(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection$9.run(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.security.AccessController.doPrivileged(Native Method)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.security.AccessController.doPrivileged(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.net.URL.openStream(Unknown Source)
[22:57:37] [Forge Version Check/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at net.minecraftforge.common.ForgeVersion$1.run(ForgeVersion.java:90)
[22:57:37] [Sound Library Loader/WARN]: ERROR MESSAGE:
[22:57:37] [Sound Library Loader/INFO]: Could not locate OpenAL library.
[22:57:37] [Sound Library Loader/INFO]: Starting up SoundSystem...
[22:57:38] [Thread-11/INFO]: Switching to No Sound
[22:57:38] [Thread-11/INFO]: (Silent Mode)
[22:57:38] [Sound Library Loader/INFO]: Sound engine started
[22:57:38] [Twitch authenticator/ERROR]: Could not authenticate with twitch
java.net.UnknownHostException: api.twitch.tv
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.8.0_51]
	at java.net.PlainSocketImpl.connect(Unknown Source) ~[?:1.8.0_51]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.8.0_51]
	at java.net.Socket.connect(Unknown Source) ~[?:1.8.0_51]
	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.8.0_51]
	at sun.security.ssl.BaseSSLSocketImpl.connect(Unknown Source) ~[?:1.8.0_51]
	at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source) ~[?:1.8.0_51]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_51]
	at java.security.AccessController.doPrivileged(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.access$200(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection$9.run(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection$9.run(Unknown Source) ~[?:1.8.0_51]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_51]
	at java.security.AccessController.doPrivileged(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.8.0_51]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.8.0_51]
	at net.minecraft.util.HttpUtil.func_152755_a(SourceFile:250) ~[ui.class:?]
	at net.minecraft.client.stream.TwitchStream$1.run(SourceFile:85) [dar.class:?]
[22:57:39] [Client thread/INFO] [FML]: Max texture size: 16384
[22:57:39] [Client thread/INFO]: Created: 16x16 textures-atlas
[22:57:40] [Client thread/INFO] [FML]: Injecting itemstacks
[22:57:40] [Client thread/INFO] [FML]: Itemstack injection complete
[22:57:40] [Client thread/INFO] [FML]: Forge Mod Loader has successfully loaded 3 mods
[22:57:40] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge
[22:57:40] [Client thread/INFO]: SoundSystem shutting down...
[22:57:41] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com
[22:57:41] [Sound Library Loader/INFO]: Starting up SoundSystem...
[22:57:41] [Thread-13/INFO]: Initializing LWJGL OpenAL
[22:57:41] [Thread-13/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[22:57:41] [Thread-13/INFO]: OpenAL initialized.
[22:57:41] [Sound Library Loader/INFO]: Sound engine started
[22:57:42] [Client thread/INFO] [FML]: Max texture size: 16384
[22:57:42] [Client thread/INFO]: Created: 512x512 textures-atlas
[22:57:43] [Client thread/ERROR]: ########## GL ERROR ##########
[22:57:43] [Client thread/ERROR]: @ Post startup
[22:57:43] [Client thread/ERROR]: 1286: Invalid framebuffer operation
[22:58:09] [Client thread/INFO]: Connecting to play.epicube.fr, 25565
[22:58:10] [Server Connector #1/ERROR]: Couldn't connect to server
java.net.UnknownHostException: play.epicube.fr
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[?:1.8.0_51]
	at java.net.InetAddress$2.lookupAllHostAddr(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAddressesFromNameService(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName0(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getByName(Unknown Source) ~[?:1.8.0_51]
	at net.minecraft.client.multiplayer.GuiConnecting$1.run(GuiConnecting.java:69) [bwc.class:?]
[22:58:13] [Client thread/INFO]: Connecting to play.epicube.fr, 25565
[22:58:13] [Server Connector #2/ERROR]: Couldn't connect to server
java.net.UnknownHostException: play.epicube.fr
	at java.net.InetAddress.getAllByName0(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getByName(Unknown Source) ~[?:1.8.0_51]
	at net.minecraft.client.multiplayer.GuiConnecting$1.run(GuiConnecting.java:69) [bwc.class:?]
[22:58:16] [Client thread/INFO]: Connecting to play.epicube.fr, 25565
[22:58:16] [Server Connector #3/ERROR]: Couldn't connect to server
java.net.UnknownHostException: play.epicube.fr
	at java.net.InetAddress.getAllByName0(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getAllByName(Unknown Source) ~[?:1.8.0_51]
	at java.net.InetAddress.getByName(Unknown Source) ~[?:1.8.0_51]
	at net.minecraft.client.multiplayer.GuiConnecting$1.run(GuiConnecting.java:69) [bwc.class:?]

J'aimerai savoir se qui ne va pas et si possible avoir une solution. Je remercie d'avance ceux qui prendront la peine de me répondre et de m'aider

Bizarre... Très bizarre. Moi j'ai windows 10 et minecraft + forge 1.8 et ben sa marche...

1 : essaye d'accéder  épicube avec l'ip et non le nom de domaine  (151.80.20.226:25565).

2 : Quelle est ta version de java, es-tu en 32bits ou en 64bits?

3 : Tu peut faire Windows + R, taper "dxdiag" et envoyer un screen de la parti système (héberge sur noelshark)?

4 : Vérifie ta connexion internet, on sais jamais

5 : Et est-ce qu'il te donne la même erreur en 1.8 "vanilla" (sans forge)?