Update (June 28, 9:45 a.m.):
What is happening? Basic Authentication, a less secure authentication method, will be disabled for Microsoft 365 mailboxes.
Why is this happening?
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Basic Authentication is being removed by Microsoft.
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The change from Basic Authentication to Modern Authentication will require Microsoft 365 mailboxes to use two-factor authentication (2FA), which will help improve the security of the mailboxes and prevent unauthorized access.
When is this happening? Thursday, July 15.
What is the impact? This process may take up to 24 hours to take effect. Mailboxes will continue to be available.
What do I need to do?
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If you are using an up-to-date mail client that supports modern authentication, there should be no impact.
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Most issues can be resolved by removing and re-adding your mail account to the mail client.
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If you are using an older mail client or one that does not support modern authentication, you may:
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Update or switch to a mail client that supports modern authentication.
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Linux users should consider using Thunderbird or the web client, https://portal.office.com.
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If Mac OS users are using an out-of-date OS, they may receive a “Can’t connect to the account “Exchange”.” error message indicating the username or password was incorrect. If this occurs, you may upgrade your Mac OS or ensure you are using a supported web browser and access your mailbox via the web client, https://portal.office.com.
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If unable to upgrade your mail client, ensure you are using a supported web browser and access your mailbox via the web client, https://portal.office.com.
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Questions or concerns? Please submit to the IST Service Desk, helpdesk@uwaterloo.ca.
Update (May 25, 8:50 a.m.): This work is being rescheduled for a later date; more details will be provided once available.
Questions or concerns? Please contact the IST Service Desk, helpdesk@uwaterloo.ca, ext. 44357.
What is happening? Basic Authentication will be disabled for Office 365 mailboxes.
Why is this happening? Basic Authentication is being deprecated by Microsoft. Disabling basic authentication will stop O365 mailboxes from bypassing multi-factor authentication, which will prevent unauthorized logins to mailboxes.
When is this happening? Basic Authentication for Office 365 mailboxes will be disabled on Tuesday, May 25. Please note the disabling process will take approximately one hour to run and the change can take up to 24 hours to take effect.
What is the impact? Some users may experience issues with accessing mailbox features after the change is made on the above date. Most issues can be resolved by removing and re-adding your mail account to the mail client. If you experience persisting issues, please submit a ticket to rt@uwaterloo.ca.
Questions or concerns? Please submit to the IST Service Desk, helpdesk@uwaterloo.ca.