What action does Google's crawler take for errors 400 and 405?
Looks like few months ago I had a bug, and a few pages available only for signed in users were indexed by Google. Right now all these page appear in crawl errors with errors 400 and 405. The bug is fixed, but Google keeps crawling them and updating the Detected column.
How do I stop Google crawling them? Should I send 404 or 410 instead?
What is the documented action for 400 and 405?