Microsoft Outlook App), or you use email on the web. you use Outlook 2016 or Microsoft 365, you use the built in email client on your mobile (e.g. You will not be affected if your Microsoft Office is up to date i.e.

you put in your own information when you added your profile, which are now not recommended.

If you manually configured your email client, i.e.

If you use Thunderbird or Spark as your email client (mainly Mac users).

If you are on a mobile device and using a non-native email app.

If you use older Outlook email programmes, i.e.

This affects people who are using either an old or nonstandard email app, e.g. If you are using an email programme with only Basic Authentication, you will not be able to send emails from 1st October and beyond. Support for this is being removed by Microsoft in their Exchange email server on 1st October 2022. There are some legacy programmes which use Basic Authentication, i.e. as well as username and password you need to set up an additional check when logging in, whether via an app or by entering a code sent by email, phone call or text message. The majority of apps, services and websites use Multi-Factor Authentication (MFA), i.e. If you are sending email from an unsupported programme or account, you will get an error message.

When you send an email from your reading.ac.uk or .uk account, the email contains additional information which advises our Microsoft Exchange email server that you are authorised to send email from that email programme and email account. Microsoft are making a mandated change on the 1st of October 2022 and will be retiring Basic Authentication for legacy protocols in Exchange Online.

Legacy authentication office 365