MC1162275 – M365 Change Digest

One-line summary

Teams now supports the teams.cloud.microsoft domain; users will be redirected over coming months, requiring admins to review network and app configurations for compatibility.

Similar updates

Details

Summary

Microsoft Teams now uses the secure cloud.microsoft domain to enhance trust and prevent spoofing. Users are auto-redirected with no action needed. Admins should update references, educate users, and ensure network access to *.cloud.microsoft and *.static.microsoft. Redirects can be disabled via Teams Admin portal.

Body (from Message Center)

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:

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 and *.static.microsoft are not blocked on your enterprise network. Please ensure your configurations adhere to the guidance in Microsoft network guidance on domains and service endpoints.

[Compliance considerations:]

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

Raw JSON (for debugging)

Expand/collapse the full payload below.

Show/hide raw

{
  "snapshot_item": {
    "action_required_by": null,
    "ai_action_required_by": "2026-06-01T00:00:00Z",
    "ai_actions": [
      "Review and update internal documentation and tools that reference old Teams URLs.",
      "Ensure *.cloud.microsoft and *.static.microsoft domains are allowed on network.",
      "Inform users about the new cloud.microsoft domain.",
      "Work with app developers to update Teams app domain references if needed."
    ],
    "ai_master_tags": [
      "User",
      "Admin",
      "Security",
      "Network"
    ],
    "ai_model": "gpt-4.1",
    "ai_summary": "Teams now supports the teams.cloud.microsoft domain; users will be redirected over coming months, requiring admins to review network and app configurations for compatibility.",
    "ai_topics": [
      "Teams",
      "Microsoft 365 Apps",
      "Outlook",
      "Microsoft 365"
    ],
    "category": "planForChange",
    "details_map": {
      "Summary": "Microsoft Teams now uses the secure cloud.microsoft domain to enhance trust and prevent spoofing. Users are auto-redirected with no action needed. Admins should update references, educate users, and ensure network access to *.cloud.microsoft and *.static.microsoft. Redirects can be disabled via Teams Admin portal."
    },
    "id": "MC1162275",
    "importance": 4,
    "is_major_change": false,
    "last_modified": "2026-05-19T17:43:24Z",
    "ms_products": [
      "Teams",
      "Microsoft 365 Apps"
    ],
    "platforms": null,
    "roadmap_ids": [],
    "services": [
      "Microsoft Teams",
      "Microsoft 365 apps"
    ],
    "severity": "normal",
    "tags": [
      "Updated message",
      "Feature update",
      "User impact",
      "Admin impact"
    ],
    "title": "(Updated) Product transitions to the cloud.microsoft domain \u2013 September 2025"
  }
}