Microsoft Teams on the web: New Private Preview for Sign in with Apple and Google for consumers may affect enterprise

• https://learn.microsoft.com/en-us/entra/fundamentals/how-to-customize-branding
• https://devblogs.microsoft.com/identity/custom-url-domains/

1. 13 Mar 2026

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2. 24 Nov 2025

   Updated September 25,November 24, 2025: This change is currently on hold. We will communicate via Message center when we are ready to proceed. We apologize for any inconvenience this may have updated the timeline. Thank caused and thank you for your patience.   We’re introducing a new sign-in experience that enhances … and enterprise users, depending on your authentication configuration. When this will happen: Preview, General Availability: We will begin rolling out update this private preview (Worldwide) in mid-November 2025 (previously mid-September) Message center post when we are ready to a small number of Teams for the web users and expect to complete by mid-December 2025 (previously mid-October). We expect to expand this feature to other Microsoft apps later in 2025.proceed. How this will affect your organization: After this rollout: Users can sign …

3. 25 Sep 2025

   Updated August 27,September 25, 2025: We have updated the timeline. Thank you for your patience.    We’re introducing a new sign-in experience that enhances flexibility and accessibility for … will happen: We will begin rolling out this private preview (Worldwide) in mid-Septembermid-November 2025 (previously late August) mid-September) to a small number of Teams for the web users and expect to complete by mid-October 2025.mid-December 2025 (previously mid-October). We expect to expand this feature to other Microsoft apps later in …

4. 27 Aug 2025

   Updated August 19,27, 2025: We have updated the timeline. Thank you for your patience. We’re … will happen: We will begin rolling out this private preview (Worldwide) in late August mid-September 2025 (previously mid-August)late August) to a small number of Teams for the web users and expect …

5. 19 Aug 2025
   • Tags Feature update, User impact, Admin impact → Updated message, Feature update, User impact, Admin impact

   Updated August 19, 2025: We have updated the timeline. Thank you for your patience. We’re introducing a new sign-in experience that enhances flexibility and accessibility for … will happen: We will begin rolling out this private preview (Worldwide) in mid-Augustlate August 2025 (previously mid-August) to a small number of Teams for the web users and expect … accounts. Organizations using custom URLs (such as login.microsoftonline.com/contoso.com) will not be affected. In the case of Teams on the web, the custom URLs will be https://teams.microsoft.com?tenantId=<YOUR_DOMAIN_NAME> or https://teams.microsoft.com?tenantId=<YOUR_TENANT_ID> Screenshots of the new experience: 1. Users can select Continue with Apple … options: What you need to do to prepare: No action is required. If you wantThis feature is only being added to ensure users are directed tologin.microsoftonline.com/common. Users accessing login.microsoftonline.com with a branded orcustom URL will not see this feature. You can show a custom sign-in experience, consider usingURL for your organization by passing a domain hintshint to bypassapply company branding at the initial sign-in screen. Custom URLs for Teams on the common endpoint.web will be https://teams.microsoft.com?tenantId=<YOUR_DOMAIN_NAME> or https://teams.microsoft.com?tenantId=<YOUR_TENANT_ID>. Learn more Add company branding to your organization's sign-in page - Microsoft …

6. 25 Jun 2025 · first version seen

• https://learn.microsoft.com/en-us/entra/fundamentals/how-to-customize-brandingNot read yet

Both explicitly reference the same documentation; this does not confirm the same change, rollout or applicability (2 items)

• Public source · 21 Aug 2026
  MC1458474: Microsoft Entra ID: Retirement of custom CSS layout and positioning properties in company branding Microsoft 365 Message Center Archive by Merill FernandoShared reference: https://learn.microsoft.com/en-us/entra/fundamentals/how-to-customize-branding
• Public source · 31 Jul 2026
  MC1435782: Microsoft Entra ID: Retirement of custom CSS positioning properties in custom branding Microsoft 365 Message Center Archive by Merill FernandoShared reference: https://learn.microsoft.com/en-us/entra/fundamentals/how-to-customize-branding

• Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.
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