(Updated) Product transitions to the cloud.microsoft domain – September 2025 [MC1162275]

Message ID: MC1162275 (Updated)

Updated May 19, 2026: We are updating this post as an informational reminder to help ensure you are informed and can proactively mitigate potential connectivity issues. Please review your configurations. Thank you for your patience. 

[Introduction]

To improve security and trust across Microsoft cloud services, Microsoft introduced the cloud.microsoft domain in early 2023. This unified, dedicated DNS domain space hosts Microsoft’s first-party authenticated SaaS products and experiences.

As part of this transition, Microsoft Teams is now available at https://teams.cloud.microsoft, in parallel with its previous domain. This change enhances security by using Microsoft’s exclusive top-level domain, .microsoft, which helps prevent spoofing and builds user trust.

Learn more by reading the 2023 blog post Introducing cloud.microsoft: a unified domain for Microsoft 365 apps and services.

[When this will happen:]

Microsoft Teams is already available at cloud.microsoft. Redirection from the previous domain will begin gradually over the coming months.

[How this affects your organization:]

Who is affected: Admins managing Microsoft Teams, Teams apps, and network configurations. All users accessing Microsoft Teams.

What will happen:

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• Users will be automatically redirected to teams.cloud.microsoft.
• No user action is required; existing links and bookmarks will continue to work.
• Users may notice that the new application domains are lacking the “.com” extension. This is by design, as “.microsoft” is Microsoft’s own top-level domain – and this exclusivity allows for additional security and protection against spoofing.
• Admins can disable redirects via the Teams Admin portal if needed.
• The cloud.microsoft domain has been a part of standard Microsoft network guidance on domains and service endpoints since April 2023. 

[What you can do to prepare:]

• Educate users to recognize and expect cloud.microsoft as a key domain for Microsoft cloud experiences. You can refer them to What is cloud.microsoft? – Microsoft Support for more information. 
• If your organizational websites, tools, or other materials reference the old URL, those links will be automatically redirected. However, it’s good practice to update those assets to avoid user confusion.
• Update internal documentation, websites, and tools that reference the old Teams URL.
• Partner with developers of in-house Teams apps (including those used in Outlook and Microsoft 365) to follow guidance in: Action required: ensure your Microsoft Teams apps are ready for upcoming domain changes.
• Confirm that *.cloud.microsoft is not blocked on your enterprise network. This should require no action if standard Microsoft network guidance on domains and service endpoints is being followed. 

[Compliance considerations:]

No compliance considerations identified, review as appropriate for your organization.

Source: Microsoft

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