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MC694387 – Outlook on the web: Replacing “Activity-Based Authentication Timeout” with “Idle Session Timeout for Microsoft 365”

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check before: 2023-12-14

Product:

Exchange, Microsoft 365 for the web, Outlook

Platform:

Online, Web, World tenant

Status:

Change type:

Admin impact, Retirement, Updated message, User impact

Links:

MC674426

Details:

Updated February 2, 2024: We have updated the content below with additional information. Thank you for your patience.
The Activity-Based Authentication Timeout for Outlook on the web will be replaced by Idle Session Timeout for Microsoft 365.
[When this will happen]
Starting in the second half of 2024.

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:

Created:
2023-11-30

updated:
2024-02-03

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changes*

DatePropertyoldnew
2024-02-03MC Last Updated01/05/2024 05:52:422024-02-02T22:55:27Z
2024-02-03MC MessagesUpdated January 5, 2024: We have updated the content below with additional information. Thank you for your patience.
The Activity-Based Authentication Timeout for Outlook on the web will be replaced by Idle Session Timeout for Microsoft 365.
[When this will happen]
Starting January 2024
Updated February 2, 2024: We have updated the content below with additional information. Thank you for your patience.
The Activity-Based Authentication Timeout for Outlook on the web will be replaced by Idle Session Timeout for Microsoft 365.
[When this will happen]
Starting in the second half of 2024.
2024-02-03MC End Time03/25/2024 08:00:002024-12-30T08:00:00Z
2024-01-05MC MessagesThe Activity-Based Authentication Timeout for Outlook on the web will be replaced with Idle Session Timeout for Microsoft 365.

[When this will happen]
We will begin rolling out this change in mid-January 2024 and expect to complete by mid-February 2024.
Updated January 5, 2024: We have updated the content below with additional information. Thank you for your patience.
The Activity-Based Authentication Timeout for Outlook on the web will be replaced by Idle Session Timeout for Microsoft 365.
[When this will happen]
Starting January 2024
2024-01-05MC MessageTagNamesUser impact, Admin impact, RetirementUpdated message, User impact, Admin impact, Retirement
2024-01-05MC How AffectIn January 2024, we will begin to end support for Activity-Based Authentication Timeout. It is strongly recommended that all organizations who have not migrated to Idle-Session Timeout and are still using Activity-Based Authentication Timeout migrate to Idle Session Timeout.
Idle Session Timeout is already available and provides the same functionality as Activity-Based Authentication Timeout with the benefit of allowing the configuration not only for Outlook on the web, but for a range of other Microsoft 365 web apps.
To check the list of Microsoft 365 web apps, click Details about idle session timeout.
In January 2024, we will begin to end support for Activity-Based Authentication Timeout. It is strongly recommended that all organizations who have not migrated to Idle-Session Timeout and are still using Activity-Based Authentication Timeout migrate to Idle Session Timeout, since no organization will be migrated automatically
Idle Session Timeout is already available and provides the same functionality as Activity-Based Authentication Timeout with the benefit of allowing the configuration not only for Outlook on the web, but for a range of other Microsoft 365 web apps.
To check the list of Microsoft 365 web apps, click Details about idle session timeout.
2024-01-05MC Last Updated11/30/2023 01:13:022024-01-05T05:52:42Z
2024-01-05MC prepareYou can migrate to Idle Session Timeout right now. To migrate to Idle Session Timeout, you only need to turn on Idle Session Timeout.
When Idle Session Timeout is enabled, users that reach the configured idle session timeout duration will get a notification that they are about to be signed out. They have to select to stay signed in or they will be automatically signed out of Microsoft 365 web apps, including Outlook on the web.
For more information about how to turn on Idle Session Timeout, click Turn on Idle session timeout.
For more information about Idle Session Timeout for Microsoft 365, click Idle session timeout for Microsoft 365.
For more information about Activity-Based Timeout for Microsoft Outlook on the web, click Description of the Activity-Based Authentication Timeout for OWA in Office 365.
https://learn.microsoft.com/microsoft-365/admin/manage/idle-session-timeout-web-apps?view=o365-worldwide
https://learn.microsoft.com/microsoft-365/admin/manage/idle-session-timeout-web-apps?view=o365-worldwide#details-about-idle-session-timeout
https://learn.microsoft.com/microsoft-365/admin/manage/idle-session-timeout-web-apps?view=o365-worldwide#turn-on-idle-session-timeout
https://support.microsoft.com/topic/description-of-the-activity-based-authentication-timeout-for-owa-in-office-365-0c101e1b-020e-69c1-a0b0-26532d60c0a4
You can migrate to Idle Session Timeout right now. To migrate to Idle Session Timeout, you only need to turn on Idle Session Timeout.
When Idle Session Timeout is enabled, users that reach the configured idle session timeout duration will get a notification that they are about to be signed out. They have to select to stay signed in or they will be automatically signed out of Microsoft 365 web apps, including Outlook on the web.
For more information about how to turn on Idle Session Timeout, click Turn on Idle session timeout.
For more information about Idle Session Timeout for Microsoft 365, click Idle session timeout for Microsoft 365.
For more information about Activity-Based Timeout for Microsoft Outlook on the web, click Description of the Activity-Based Authentication Timeout for OWA in Office 365.
https://learn.microsoft.com/microsoft-365/admin/manage/idle-session-timeout-web-apps?view=o365-worldwide
https://learn.microsoft.com/microsoft-365/admin/manage/idle-session-timeout-web-apps?view=o365-worldwide#details-about-idle-session-timeout
https://learn.microsoft.com/microsoft-365/admin/manage/idle-session-timeout-web-apps?view=o365-worldwide#turn-on-idle-session-timeout
https://support.microsoft.com/topic/description-of-the-activity-based-authentication-timeout-for-owa-in-office-365-0c101e1b-020e-69c1-a0b0-26532d60c0a4

*starting April 2022

Last updated 3 weeks ago

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