Win 7 + Outlook 2013 + Modern Auth enabled

Question

Hi,

Since MS will disable Basic Authentication starting from Oct-2022, Clients are changing desktop Outlook using Exchange connection instead of POP.

Some computers are using win7 + Office 2013 and do the following tasks to support Modern authentication.

1. Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows
   https://support.microsoft.com/en-us/topic/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-winhttp-in-windows-c4bd73d2-31d7-761e-0178-11268bb10392
2. Enable Modern authentication for Office 2013 on Windows devices
   https://learn.microsoft.com/en-us/microsoft-365/admin/security-and-compliance/enable-modern-authentication?view=o365-worldwide
3. Office versions and connectivity to Microsoft 365 services
   https://learn.microsoft.com/en-us/deployoffice/endofsupport/microsoft-365-services-connectivity

Then add exchange account in Outlook 2013. As a result, some computers can popup web screen to input email address and password. That is modern authentication.

But some computers can popup dialog windows to input email address and password only. That is basic authentication.

Q1: Those computers which use basic authentication has met above requirement. How to fix these computers so that can use modern authentication?
Q2. If basic authentication is disabled by MS after Oct-2022, will these clients cannot access Outlook?

Please advise.

Answer 1

Hi @EcoAxis

Q1: Those computers which use basic authentication has met above requirement. How to fix these computers so that can use modern authentication?

Basic authentication will be turned off in all tenants beginning October 1st. This means that those machines that do not use modern authentication will cease to work.

However, Microsoft has put out an article that you can use the self-service diagnostic to turn basic authentication back on per protocol until 2023. This will buy you some time to transition your devices/Outlook to a supported version.

https://techcommunity.microsoft.com/t5/exchange-team-blog/basic-authentication-deprecation-in-exchange-online-september/ba-p/3609437

Q2. If basic authentication is disabled by MS after Oct-2022, will these clients cannot access Outlook?

As stated in the previous question, you can re-enable basic authentication until 2023. This will buy you time to upgrade your devices/software to the required versions. After this, your older devices/software will no longer be able to access their e-mails through Outlook due to not supporting modern authentication.

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