Minecraft Forums

HELP!!!! After the 1.8.7 update my minecraft does not work! When I launch the game, the bar at the bottom says "downloading jar. 1.8.7..." and then it brings up a fourth tab called "game output" and has the following error message..

"Error: Could not find or load main class net.minecraft.client.main.Main
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release"

I have fully updated java, I've tried uninstalling and reinstalling, nothing will work! I've tried most solutions I've found on the internet but none of them seem to help.. Can anyone be of assistance?

Can you provide the launcher log and a speedtest from speedtest.net?

LAUNCHER LOG:

[SPOILER] "[15:46:14 INFO]: Minecraft Launcher 1.6.11 (through bootstrap 100) started on windows...
[15:46:14 INFO]: Current time is Jun 7, 2015 3:46:14 PM
[15:46:14 INFO]: System.getProperty('os.name') == 'Windows 7'
[15:46:14 INFO]: System.getProperty('os.version') == '6.1'
[15:46:14 INFO]: System.getProperty('os.arch') == 'amd64'
[15:46:14 INFO]: System.getProperty('java.version') == '1.8.0_25'
[15:46:14 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[15:46:14 INFO]: System.getProperty('sun.arch.data.model') == '64'
[15:46:14 INFO]: proxy == DIRECT
[15:46:14 INFO]: JFX is already initialized
[15:46:14 INFO]: Refreshing local version list...
[15:46:14 INFO]: Refreshing remote version list...
[15:46:20 INFO]: Refresh complete.
[15:46:20 INFO]: Loaded 1 profile(s); selected 'Jontron_'
[15:46:20 INFO]: Refreshing auth...
[15:46:20 INFO]: Logging in with access token
[15:46:22 INFO]: Getting syncinfo for selected version
[15:46:22 INFO]: Queueing library & version downloads
[15:46:23 INFO]: Download job 'Version & Libraries' started (16 threads, 34 files)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-64.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar for job 'Version & Libraries'... (try 0)
[15:46:23 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Download job 'Resources' skipped as there are no files to download
[15:46:24 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-64.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.4-nightly-20150209\lwjgl-platform-2.9.4-nightly-20150209-natives-windows.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\6.5\twitch-platform-6.5-natives-windows-64.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.21\realms-1.7.21.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.21\realms-1.7.21.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\6.5\twitch-6.5.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Attempting to download C:\Users\Jon\AppData\Roaming\.minecraft\versions\1.8.7\1.8.7.jar for job 'Version & Libraries'... (try 0)
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\6.5\twitch-platform-6.5-natives-windows-64.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\6.5\twitch-6.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.4-nightly-20150209\lwjgl-platform-2.9.4-nightly-20150209-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:24 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:46:32 INFO]: Finished downloading C:\Users\Jon\AppData\Roaming\.minecraft\versions\1.8.7\1.8.7.jar for job 'Version & Libraries': Couldn't connect to server (SSLException: 'Invalid TLS padding data') but have local file, assuming it's good
[15:46:32 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:09.036)
[15:46:32 INFO]: Launching game
[15:46:32 INFO]: Unpacking natives to C:\Users\Jon\AppData\Roaming\.minecraft\versions\1.8.7\1.8.7-natives-1534142343742199
[15:46:32 INFO]: Launching in C:\Users\Jon\AppData\Roaming\.minecraft
[15:46:32 INFO]: Half command: C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Djava.library.path=C:\Users\Jon\AppData\Roaming\.minecraft\versions\1.8.7\1.8.7-natives-1534142343742199 -cp C:\Users\Jon\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.21\realms-1.7.21.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar;C:\Users\Jon\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\6.5\twitch-6.5.jar;C:\Users\Jon\AppData\Roaming\.minecraft\versions\1.8.7\1.8.7.jar net.minecraft.client.main.Main
[15:46:32 INFO]: Looking for orphaned versions to clean up...
[15:46:33 ERROR]: Game ended with bad state (exit code 1)
[15:46:33 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[15:46:33 INFO]: Looking for old natives & assets to clean up...
[15:46:33 INFO]: Deleting C:\Users\Jon\AppData\Roaming\.minecraft\versions\1.8.7\1.8.7-natives-1534142343742199" [/SPOLIER]

Speedtest is irrelevant as I am playing offline.

Quote from jontron23»

...

You noted that you were playing offline. You need to be online in order for Minecraft to be able to download all it's files.

That aside, do you get a "Crash report" tab when you launch the game?

If not, please provide the content in the following locations:

C:\Users\Jon\AppData\Roaming\.minecraft\logs\output-client.txt

C:\Users\Jon\AppData\Roaming\.minecraft\logs\latest.txt

Copy the contents of those text files and submit them over to https://gist.github.com/ and give us the links you get.