Affected version is: 1.6.70 (currently does not exist as value for Affected Version/s)
After closing Minecraft 1.11 the launcher prints multiple times {{[### ERROR]: java.io.IOException: Stream closed}} (replaced time with ###) in the Launcher Log.
Launcher Log (extract)
[14:44:54 INFO]: Launching game
[14:44:54 INFO]: Unpacking natives to C:\Users\###\AppData\Roaming\.minecraft\versions\1.11\1.11-natives-9087244061798
[14:44:54 INFO]: Launching in ###
[14:44:54 INFO]: Half command: ### -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Djava.library.path=C:\Users\###\AppData\Roaming\.minecraft\versions\1.11\1.11-natives-9087244061798 -cp C:\Users\###\AppData\Roaming\.minecraft\libraries\com\mojang\netty\1.6\netty-1.6.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.24\authlib-1.5.24.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.10.4\realms-1.10.4.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\it\unimi\dsi\fastutil\7.0.12_mojang\fastutil-7.0.12_mojang.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar;C:\Users\###\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar;C:\Users\###\AppData\Roaming\.minecraft\versions\1.11\1.11.jar net.minecraft.client.main.Main
[14:44:54 INFO]: Looking for orphaned versions to clean up...
[14:44:54 INFO]: Looking for old natives & assets to clean up...
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 ERROR]: java.io.IOException: Stream closed
[14:45:05 INFO]: Game ended with no troubles detected (exit code 0)
[14:45:05 INFO]: Deleting C:\Users\###\AppData\Roaming\.minecraft\versions\1.11\1.11-natives-9087244061798
[14:45:05 WARN]: Couldn't delete C:\Users\###\AppData\Roaming\.minecraft\versions\1.11\1.11-natives-9087244061798 - scheduling for deletion upon exit
Is this still a concern in the current Minecraft Launcher version 2.0.805 / 2.0.806? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. It will be reopened it as soon as the requested information has been delivered.