MC1296939 – M365 Change Digest

One-line summary

A Power Platform update through May 31, 2026 may cause intermittent sign-in issues for long-running browser tabs in several apps; refresh affected tabs to resolve.

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Details

Body (from Message Center)

We are completing a platform update across Power Platform that started on April 29, 2026, and is anticipated to be completed by May 31, 2026. During this update, and for a period after, customers with active long-running browser tabs may experience intermittent sign-in interruptions with the listed apps below.

Power Apps (apps.powerapps.com)
Power Apps Studio (make.powerapps.com)
Power Automate (make.powerautomate.com)
Power Pages design studio (make.powerpages.microsoft.com)
Power Platform admin center (admin.powerplatform.microsoft.com)
Copilot Studio (copilotstudio.microsoft.com)
Power Apps vibe (vibe.powerapps.com)
Project Sophia (projectsophia.microsoft.com)

What action do I need to take?
If you receive a notification to sign in to any of the listed apps, please hard refresh (Ctrl+Shift+R on Windows / Cmd+Shift+R on Mac) your long-running browser tab(s) to resolve the issue.

Why is this action needed?
This Power Platform update may result in sign-in interruptions for users with long-running browser tabs. If action is not taken, you may continue to experience these interruptions until the tab is refreshed.

Please contact Microsoft Support if you require further assistance.

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{
  "snapshot_item": {
    "action_required_by": null,
    "ai_action_required_by": "2026-05-31T00:00:00Z",
    "ai_actions": [
      "Notify users to refresh browser tabs if sign-in interrupted"
    ],
    "ai_master_tags": [
      "User",
      "Admin"
    ],
    "ai_model": "gpt-4.1",
    "ai_summary": "A Power Platform update through May 31, 2026 may cause intermittent sign-in issues for long-running browser tabs in several apps; refresh affected tabs to resolve.",
    "ai_topics": [
      "Power Platform",
      "Power Apps",
      "Power Automate",
      "Power Pages",
      "Copilot Studio",
      "Project Sophia"
    ],
    "category": "preventOrFixIssue",
    "details_map": {},
    "id": "MC1296939",
    "importance": 5,
    "is_major_change": false,
    "last_modified": "2026-05-01T01:19:04Z",
    "ms_products": [
      "Power Platform"
    ],
    "platforms": null,
    "roadmap_ids": [],
    "services": [
      "Power Platform"
    ],
    "severity": "high",
    "tags": [
      "User impact",
      "Admin impact"
    ],
    "title": "Power Platform \u2013 Please hard refresh your active long-running browser tab(s)"
  }
}