withheld

I had the same thing. The problem thing i had figured out was that if you make a new microsoft account through the migration link then it makes the new account and then 403s when it tries to migrate.

The fix: Make it so you can't make a new account on the migration link

The workarounds:

1, Make the account on microsoft.com first then migrate to that.

2, If you have already gotten the 403 just go through the migration link again and use that account.

Yes, however it doesn't explain why it happens. The why it happens is when you try to make an account on the migration link it makes the microsoft account but then 403s, so then you have to go through the migration link again and use that account.

If this is a dupe it's because i looked through 2 pages of 403s and couldn't find this at all.

Are you on linux? im on Lubuntu (KDE neon) And sometimes my camera has just randomly moved, sucks when doing anything

yes and great for getting free armour in till my game freezes.

same here. comfirmed.
Launching game
Launching!
Running: "C:\Program Files\Java\jre7\bin\java" -Xmx2G -Djava.library.path=C:\Users\GeneWeaver\AppData\Roaming\.minecraft\versions\13w16a\13w16a-natives -cp C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.4\jopt-simple-4.4.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.8.5\lwjgl-2.8.5.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.8.5\lwjgl_util-2.8.5.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\GeneWeaver\AppData\Roaming\.minecraft\versions\13w16a\13w16a.jar net.minecraft.client.main.Main --username geneweaver --session c6b23b57ffba0b66234c7fb189f8780ee4817ca0

YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

(We'll do this automatically later ;D) ----
Client> Error occurred during initialization of VM
Client> Could not reserve enough space for object heap
Client> Error: Could not create the Java Virtual Machine.
Client> Error: A fatal exception has occurred. Program will exit.