The error mainly occurs due to the system files of your Outlook client. Or you have misconfigured your Outlook settings. To fix this, you can try the following ...

If an Outlook Error 0x80042109 appears on your Windows 11/10 PC when you try sending e-mail messages via Outlook, then this post may help you fix the problem. For ...

The most recent time I ran into this problem (today), updating all apps via the Windows Store fixed the issue. Odd, because I'm running a fresh install of Windows 11, so you'd think I'd already have ...