Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal
- Fournisseur
- Microsoft
- Produit
- Microsoft Teams, Microsoft Defender for Office 365
- Type
- Sécurité
- Date annonce
- 2025-12-12
- Date effet
- 2026-01-28
- Impact
- Concerné
En bref
Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal
Ce que dit la source
Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General Availability Worldwide (Standard Multi-Tenant) Microsoft Defender for Office 365 Microsoft Teams Web
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Lecture pour un commercial
Qui est concerné : The audience described by the Microsoft update is represented by: Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General A
Pourquoi c'est important : The change matters because the official source describes: Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General A
Urgence : Immédiate
Prochaine action : Review affected accounts with the customer using the official announcement.
Opportunités commerciales
- Use the verified change to open a scoped customer conversation.
Actions techniques
- Assess whether the documented change intersects the customer's current stack.
Questions à poser au client
- Does this documented change affect a product or workload in scope?
Risques et objections
- The official source does not establish facts beyond the quoted material.
Points à confirmer
- The operational scope for this persona must be confirmed before action.
Preuves et traçabilité
Chaque extrait est relié à la source primaire et conservé pour vérification.
- Capture brute
2026-08-29T09:22:49.319599+00:00
- Événement
Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General Availability Worldwide (Standard Multi-Tenant) Microsoft Defender for Office 365 Microsoft Teams Web
source - Produit Microsoft Teams
Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General Availability Worldwide (Standard Multi-Tenant) Microsoft Defender for Office 365 Microsoft Teams Web
source - Produit Microsoft Defender for Office 365
Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General Availability Worldwide (Standard Multi-Tenant) Microsoft Defender for Office 365 Microsoft Teams Web
source - Insight un commercial
Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Security admins with Defender for Office 365 Plan 1 and above can block external users from sending messages, calls, meetings invitation over Microsoft Teams via the Tenant Allow Block List in Microsoft Defender portal. Updated January 28, 2026: We are pausing rollout at this time as we address an ongoing issue. We apologize for any inconvenience. GA date: February CY2026 Launched General Availability Worldwide (Standard Multi-Tenant) Microsoft Defender for Office 365 Microsoft Teams Web
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