This incident has been resolved.

A fix has been implemented and we are monitoring the results.

Password changes from account settings are currently failing for all users. Affected attempts do not take effect. Your existing password remains active and your account is not impacted. If you need to change your password now, use “Forgot password” on the sign-in page. That flow is working normally and will let you set a new password. We’ve identified the cause and are working on a fix.