It’s cool though, cause he copy-pasted a generic statement
You have to go to process explorer and kill all blizzard/battle.net related stuff u see.
wait a bit and then run client again. worked for me.
We are still investigating this error. Some users are reporting being able to login after restarting the PC or similar, so be sure to try that if you haven’t yet. Though if it’s still not working after that hang tight! Our engineers are on the case!
This problem was resolved a few hours ago. If you continue to have problems, please restart your computer and retest. If that doesn’t fix the problem, you should start your own thread on the battle.net application forums.