If you cannot send Email when connected to VPN on your Windows 11/10 computer, use the solutions in this post to resolve the issue.

If you’re stuck at The message cannot be sent right now Outlook error, make sure you’re properly connected to the internet. If not, reset your router and try sending the email after a while ...

When some users attempt to send attachments to mail recipients, the attachments will either not be received, or not properly attach to the message in the first place.