Board Thread:Bug Reports/@comment-26410366-20160817192005/@comment-27219153-20160817204122

You are still on the same java version. You may have to manually change the path in the launcher to force it to use the new version. Make sure that the Executable (right above JVM Arguments) is set to the new java version. If the new java doesn't work, I would try deleting and reinstalling minecraft. Be sure to save important files from your .minecraft to another location first.