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MC801980 – (Updated) Legacy Outlook clients retirement plan

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check before: 2024-06-29

Product:

Exchange, Microsoft 365 Apps, Microsoft 365 for the web, Microsoft Edge, Outlook, Windows

Platform:

Android, iOS, Mac, Online, Web, Windows Desktop, World tenant

Status:

Change type:

Admin impact, Retirement, Updated message, User impact

Links:

Details:

Summary:
Starting mid-July 2024, legacy Outlook clients will be retired, affecting users with outdated versions on iOS, Android, Mac, and Windows Mail and Calendar applications. From mid-August, outdated browsers will receive an error on Outlook web. Users must update to the latest versions for continued functionality and support.

Details:
Updated June 18, 2024: This post does not refer, nor does it impact classic Outlook for Windows. For the latest timing update for the new Outlook for Windows, please read New Outlook for Windows: A Guide to Product Availability. We apologize for any confusion and thank you for your feedback.
Starting in mid-July, for organizations that use vanity domains and their users are on the following version of clients they will experience functionality diminishing:
Outlook for iOS versions prior to 4.2411,
Outlook for Android versions before 4.2342,
Outlook for Mac versions older than 16.73
Windows Mail and Calendar applications
We encourage users to switch to the new Outlook for Windows, and update to the newest versions of Outlook on iOS, Android, and Mac. Our ongoing development efforts and advanced security measures will be focused on these updated platforms.
Starting in mid-August, for Outlook on the web and Outlook.com:
If users are using an old browser, they will receive an error page, and prompt to get the newer version of browser to continue using Outlook on the web.
Internet Explorer
Microsoft Edge Legacy
New Microsoft Edge<=79
Chrome<=79
Safari <=13.1
Mozilla Firefox< =78
Opera <=76
The light version of Outlook on the web will also be retired.
[When this will happen:]
For Outlook iOS, Android, Mac and Windows Mail and Calendar Application, we'll be gradually rolling this out to customers in mid-July 2024, and the roll out will be completed by late September 2024.
For Outlook on the web, we’ll be gradually rolling this out to customers in mid-August 2024, and the roll out will be completed by late October 2024.

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:

Created:
2024-06-15

updated:
2024-06-19

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changes*

DatePropertyoldnew
2024-06-19MC MessagesStarting in mid-July, for organizations that use vanity domains and their users are on the following version of clients they will experience functionality diminishing:
Outlook for iOS versions prior to 4.2411,
Outlook for Android versions before 4.2342,
Outlook for Mac versions older than 16.73
Windows Mail and Calendar applications
We encourage users to switch to the new Outlook for Windows, and update to the newest versions of Outlook on iOS, Android, and Mac. Our ongoing development efforts and advanced security measures will be focused on these updated platforms.
Starting in mid-August, for Outlook on the web and Outlook.com:
If users are using an old browser, they will receive an error page, and prompt to get the newer version of browser to continue using Outlook on the web.
Internet Explorer
Microsoft Edge Legacy
New Microsoft Edge<=79
Chrome<=79
Safari <=13.1
Mozilla Firefox< =78
Opera <=76
The light version of Outlook on the web will also be retired.
[When this will happen:]
For Outlook iOS, Android, Mac and Windows Mail and Calendar Application, we'll be gradually rolling this out to customers in mid-July 2024, and the roll out will be completed by late September 2024.
For Outlook on the web, we’ll be gradually rolling this out to customers in mid-August 2024, and the roll out will be completed by late October 2024.
Updated June 18, 2024: This post does not refer, nor does it impact classic Outlook for Windows. For the latest timing update for the new Outlook for Windows, please read New Outlook for Windows: A Guide to Product Availability. We apologize for any confusion and thank you for your feedback.
Starting in mid-July, for organizations that use vanity domains and their users are on the following version of clients they will experience functionality diminishing:
Outlook for iOS versions prior to 4.2411,
Outlook for Android versions before 4.2342,
Outlook for Mac versions older than 16.73
Windows Mail and Calendar applications
We encourage users to switch to the new Outlook for Windows, and update to the newest versions of Outlook on iOS, Android, and Mac. Our ongoing development efforts and advanced security measures will be focused on these updated platforms.
Starting in mid-August, for Outlook on the web and Outlook.com:
If users are using an old browser, they will receive an error page, and prompt to get the newer version of browser to continue using Outlook on the web.
Internet Explorer
Microsoft Edge Legacy
New Microsoft Edge<=79
Chrome<=79
Safari <=13.1
Mozilla Firefox< =78
Opera <=76
The light version of Outlook on the web will also be retired.
[When this will happen:]
For Outlook iOS, Android, Mac and Windows Mail and Calendar Application, we'll be gradually rolling this out to customers in mid-July 2024, and the roll out will be completed by late September 2024.
For Outlook on the web, we’ll be gradually rolling this out to customers in mid-August 2024, and the roll out will be completed by late October 2024.
2024-06-19MC TitleLegacy Outlook clients retirement plan(Updated) Legacy Outlook clients retirement plan
2024-06-19MC Last Updated06/15/2024 00:01:042024-06-18T19:09:06Z
2024-06-19MC MessageTagNamesUser impact, Admin impact, RetirementUpdated message, User impact, Admin impact, Retirement
2024-06-19MC prepareWe recommend you upgrade your clients from legacy Outlook clients to the latest version of Outlook clients for the latest features and security protections.
Learn more
Outlook on the web: Supported browsers for Outlook on the web and Outlook.com
Windows Mail and Calendar Application: Outlook for Windows: The Future of Mail, Calendar, and People on Windows 11 - Microsoft Support
Outlook iOS: Microsoft Outlook on the App Store (apple.com)
Outlook Android: Microsoft Outlook - Apps on Google Play
Outlook Mac: Microsoft Outlook on the Mac App Store (apple.com)
https://apps.apple.com/us/app/microsoft-outlook/id951937596?referrer=kmas_id%253d35566d87-7eeb-480e-3263-0ac2c47b0e19%2526ocid%253dcmmrmrikbmn%2526rid%253deEmOeSXU
https://apps.apple.com/us/app/microsoft-outlook/id985367838?mt=12
https://play.google.com/store/apps/details?id=com.microsoft.office.outlook&referrer=kmas_id%253dbe847d74-dbca-91a0-0d41-af7a2926861d%2526ocid%253dcmmo2y8kpf1%2526rid%253dn8ZF4eU6
https://support.microsoft.com/office/outlook-for-windows-the-future-of-mail-calendar-and-people-on-windows-11-715fc27c-e0f4-4652-9174-47faa751b199
https://support.microsoft.com/office/supported-browsers-for-outlook-on-the-web-and-outlook-com-ca350265-6284-4682-9abd-85fc2bd37934
We recommend you upgrade your clients from legacy Outlook clients to the latest version of Outlook clients for the latest features and security protections.
Learn more
Outlook on the web: Supported browsers for Outlook on the web and Outlook.com
Windows Mail and Calendar Application: Outlook for Windows: The Future of Mail, Calendar, and People on Windows 11 - Microsoft Support
Outlook iOS: Microsoft Outlook on the App Store (apple.com)
Outlook Android: Microsoft Outlook - Apps on Google Play
Outlook Mac: Microsoft Outlook on the Mac App Store (apple.com)
https://aka.ms/newOutlookTimeline
https://apps.apple.com/us/app/microsoft-outlook/id951937596?referrer=kmas_id%253d35566d87-7eeb-480e-3263-0ac2c47b0e19%2526ocid%253dcmmrmrikbmn%2526rid%253deEmOeSXU
https://apps.apple.com/us/app/microsoft-outlook/id985367838?mt=12
https://play.google.com/store/apps/details?id=com.microsoft.office.outlook&referrer=kmas_id%253dbe847d74-dbca-91a0-0d41-af7a2926861d%2526ocid%253dcmmo2y8kpf1%2526rid%253dn8ZF4eU6
https://support.microsoft.com/office/outlook-for-windows-the-future-of-mail-calendar-and-people-on-windows-11-715fc27c-e0f4-4652-9174-47faa751b199
https://support.microsoft.com/office/supported-browsers-for-outlook-on-the-web-and-outlook-com-ca350265-6284-4682-9abd-85fc2bd37934

*starting April 2022

Last updated 4 weeks ago

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