I know little of Hotmail, but this link may assist:

https://support.microsoft.com/en-us/account-billing/create-app-passwords-for-your-work-or-school-account-d8bc744a-ce3f-4d4d-89c9-eb38ab9d4137

Thank you for your response, David. Unfortunately, it only relates to office 2010 in which the setting are totally different from my current microsoft 365 set up.

What error message do you see? Are these your settings? - incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 (assuming IMAP) - outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2

My settings are: Incoming = imap-mail.outlook.com port 993, etc Outgoing = smtp-mail.ouutlook.com, port 587, etc

Hi again David,

I've just tried your suggested settings, but it still doesn't work.

Have you enabled IMAP in webmail Settings/Mail/Forwarding & IMAP?

Hi and thank you for your thoughts. I am unable to find Thunderbird webmail. Every time I look for it, all I get are links to download to my desktop. Have you got another way to find it? Look forward to your response.

What sfhowes meant was to set IMAP as an option for email client in your web account. That is, you must login to your email provider website and set what access is to be allowed.

Thanks to everybody that answered . It is all sorted now.

Regards. David.