check before: 2025-07-01
Product:
Microsoft Loop, Teams, Windows
Platform:
Mac, Online, Web, Windows Desktop, World tenant
Status:
Rolling out
Change type:
New feature, User impact, Admin impact
Links:
Details:
Summary:
Microsoft Teams is introducing a feature allowing file attachments in external 1:1 and group chats, enhancing collaboration. This feature will roll out in July 2025 and requires admin configuration. Admins can enable it via PowerShell using the FileSharingInChatsWithExternalUsers policy. More details are available on the Microsoft Learn link provided.
Details:
We're introducing a new capability in Microsoft Teams that allows users to attach files when chatting with external users in 1:1 and group chats. This enhancement improves collaboration by enabling seamless file sharing across organizational boundaries.
This message applies to Teams for Windows desktop, Teams for Mac desktop, and Teams for the web.
This message is associated with Microsoft 365 Roadmap ID 492625.
[When this will happen:]
Targeted Release: We will begin rolling out early July 2025 and expect to complete by mid-July 2025.
General Availability (Worldwide): We will begin rolling out mid-July 2025 and expect to complete by late July 2025.
Change Category:
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Scope:
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Release Phase:
Standard Release
Created:
2025-06-25
updated:
2025-07-19
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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linked item details
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Pictures
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summary for non-techies**
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Direct effects for Operations**
File Sharing Security Risks
Without proper admin configuration, users may inadvertently share sensitive files with external parties, leading to data breaches or compliance issues.
- roles: IT Admin, Compliance Officer
- references: https://www.microsoft.com/microsoft-365/roadmap?id=492625, https://learn.microsoft.com/powershell/module/teams/set-csteamsfilespolicy?view=teams-ps#-filesharinginchatswithexternalusers
User Confusion and Frustration
If the feature is rolled out without preparation, users may be confused about the new file sharing capabilities, leading to frustration and decreased productivity.
- roles: End User, Team Leader
- references: https://www.microsoft.com/microsoft-365/roadmap?id=492625, https://learn.microsoft.com/powershell/module/teams/set-csteamsfilespolicy?view=teams-ps#-filesharinginchatswithexternalusers
Configutation Options**
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Data Protection**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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change history
| Date | Property | old | new |
| 2025-07-19 | MC Feature Ring | Standard Release, Targeted Release | Standard Release |
| 2025-07-17 | MC Feature Ring | Standard Release, Targeted Release | |
| 2025-07-17 | MC Feature Status | Scheduled | Rolling out |
Last updated 3 days ago ago
