MC392295 – (Updated) Disable chat write access for anonymous or unauthenticated users

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check before: 2022-06-29

Product:

Teams

Platform:

Mac, US Instances, Web, Windows Desktop, World tenant

Status:

Rolling out

Change type:

New feature, Updated message, User impact

Links:

91142

Details:

Updated October 12, 2022: We have updated the rollout timeline below. Thank you for your patience.
Financial institutions consider chat messages as a form of data exfiltration, so it's imperative for IT admins to gain flexibility and control over chat access for anonymous or unauthenticated users. The latter may be expected to join Teams meetings, but they should be restricted from seeing and accessing any type of electronic communication on chat. This feature provides additional security by only disabling chat write access for non-federated users and unauthenticated users who join Teams meetings through a link, so it must be used in conjunction with disabled meeting chat policy applied to financial advisors to remain compliant.
This message is associated with Microsoft 365 Roadmap ID 91142

[When this will happen:]

Standard: early June through mid-July

GCC: late July through mid-August
GCC High: late August through late November (previously early September)
DoD: mid-September through early December (previously late September)

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:
General Availability

Created:
2022-06-15

updated:
2022-10-13

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changes*

DatePropertyoldnew
2022-10-13MC MessagesFinancial institutions consider chat messages as a form of data exfiltration, so it's imperative for IT admins to gain flexibility and control over chat access for anonymous or unauthenticated users. The latter may be expected to join Teams meetings, but they should be restricted from seeing and accessing any type of electronic communication on chat. This feature provides additional security by only disabling chat write access for non-federated users and unauthenticated users who join Teams meetings through a link, so it must be used in conjunction with disabled meeting chat policy applied to financial advisors to remain compliant.
This message is associated with Microsoft 365 Roadmap ID 91142

[When this will happen:]

Standard: early June through mid-July

GCC: late July through mid-August
GCC High: late August through early September
DoD: mid-September through late September
Updated October 12, 2022: We have updated the rollout timeline below. Thank you for your patience.
Financial institutions consider chat messages as a form of data exfiltration, so it's imperative for IT admins to gain flexibility and control over chat access for anonymous or unauthenticated users. The latter may be expected to join Teams meetings, but they should be restricted from seeing and accessing any type of electronic communication on chat. This feature provides additional security by only disabling chat write access for non-federated users and unauthenticated users who join Teams meetings through a link, so it must be used in conjunction with disabled meeting chat policy applied to financial advisors to remain compliant.
This message is associated with Microsoft 365 Roadmap ID 91142

[When this will happen:]

Standard: early June through mid-July

GCC: late July through mid-August
GCC High: late August through late November (previously early September)
DoD: mid-September through early December (previously late September)
2022-10-13MC TitleDisable chat write access for anonymous or unauthenticated users(Updated) Disable chat write access for anonymous or unauthenticated users
2022-10-13MC Last Updated06/15/2022 01:05:052022-10-13T00:28:15Z
2022-10-13MC MessageTagNamesNew feature, User impactUpdated message, New feature, User impact
2022-10-13MC End Time10/31/2022 08:00:002023-01-05T08:00:00Z
2022-09-15MC prepareThere are two ways IT admins can disable chat write access for non-federated users and unauthenticated users who join Teams meetings through a link:
PowerShell: Admins can run the syntax [-MeetingChatEnabledType ] with current supported values Enabled, Disabled, or EnabledExceptAnonymous.

Teams Admin Portal: Admins can select the option, "Turn it on for everyone but anonymous users" in the "Chat in meetings" dropdown and apply this meeting policy to a subset or all tenant users.
Note: the scope of EnabledExceptAnonymous or "Turn it on for everyone but anonymous users" is limited to disabled write access. Once this meeting chat policy is applied to user/s, an organizer cannot override this policy through meeting options.
ps://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=9114
There are two ways IT admins can disable chat write access for non-federated users and unauthenticated users who join Teams meetings through a link:
PowerShell: Admins can run the syntax [-MeetingChatEnabledType ] with current supported values Enabled, Disabled, or EnabledExceptAnonymous.

Teams Admin Portal: Admins can select the option, "Turn it on for everyone but anonymous users" in the "Chat in meetings" dropdown and apply this meeting policy to a subset or all tenant users.
Note: the scope of EnabledExceptAnonymous or "Turn it on for everyone but anonymous users" is limited to disabled write access. Once this meeting chat policy is applied to user/s, an organizer cannot override this policy through meeting options.
https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=91142
2022-08-27MC prepareThere are two ways IT admins can disable chat write access for non-federated users and unauthenticated users who join Teams meetings through a link:
PowerShell: Admins can run the syntax [-MeetingChatEnabledType ] with current supported values Enabled, Disabled, or EnabledExceptAnonymous.

Teams Admin Portal: Admins can select the option, "Turn it on for everyone but anonymous users" in the "Chat in meetings" dropdown and apply this meeting policy to a subset or all tenant users.
Note: the scope of EnabledExceptAnonymous or "Turn it on for everyone but anonymous users" is limited to disabled write access. Once this meeting chat policy is applied to user/s, an organizer cannot override this policy through meeting options.
https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=91142
There are two ways IT admins can disable chat write access for non-federated users and unauthenticated users who join Teams meetings through a link:
PowerShell: Admins can run the syntax [-MeetingChatEnabledType ] with current supported values Enabled, Disabled, or EnabledExceptAnonymous.

Teams Admin Portal: Admins can select the option, "Turn it on for everyone but anonymous users" in the "Chat in meetings" dropdown and apply this meeting policy to a subset or all tenant users.
Note: the scope of EnabledExceptAnonymous or "Turn it on for everyone but anonymous users" is limited to disabled write access. Once this meeting chat policy is applied to user/s, an organizer cannot override this policy through meeting options.
ps://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=9114

*starting April 2022

Last updated 2 months ago

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