{"id":18445,"date":"2026-09-10T08:05:18","date_gmt":"2026-09-09T23:05:18","guid":{"rendered":"https:\/\/m365jp.net\/?p=18445"},"modified":"2026-09-10T08:05:27","modified_gmt":"2026-09-09T23:05:27","slug":"mc1469961-microsoft-viva-glint-copilot-features-are-no-longer-available-for-cross-tenant-guest-users","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-09-10-mc1469961-microsoft-viva-glint-copilot-features-are-no-longer-available-for-cross-tenant-guest-users","title":{"rendered":"MC1469961 | Microsoft Viva Glint: Copilot features are no longer available for cross-tenant guest users"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1469961 | Microsoft Viva Glint: Copilot features are no longer available for cross-tenant guest users<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>planForChange<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>09\/09\/2026 22:31:17<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>09\/09\/2026 22:30:57<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>10\/25\/2026 07:00:00<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<p><b>[What and why]<\/b><\/p>\n<p>Beginning August 26, 2026, Copilot features in Microsoft Viva Glint are no longer available to Microsoft Entra cross-tenant guest users (B2B collaboration guest users).<\/p>\n<p>Copilot in Viva Glint relies on Microsoft Copilot large language model (LLM) services. These underlying services do not currently support cross-tenant guest users. Previously, affected users might have experienced authentication errors or Copilot features   that failed to load. To provide a more consistent experience, Viva Glint now hides the affected Copilot features for these users instead of displaying errors.<\/p>\n<p>This change is not related to licensing or Viva Feature Access Management (VFAM) policy settings.<\/p>\n<p><b>[Rollout schedule]<\/b><\/p>\n<ul>\n<li><b>General Availability (Worldwide):<\/b> Rollout began in <b>late August 2026<\/b> and is expected to complete in late  <b>September 2026<\/b><\/li>\n<\/ul>\n<p><b>[Impact on your organization]<\/b><\/p>\n<p><em>Who is affected<\/em><\/p>\n<ul>\n<li>Microsoft Entra cross-tenant guest users who access Viva Glint in your tenant<\/li>\n<li>Viva Glint administrators and support teams that support those users<\/li>\n<\/ul>\n<p><em>Platforms and services<\/em><\/p>\n<ul>\n<li>Microsoft Viva Glint<\/li>\n<li>Microsoft Entra ID<\/li>\n<\/ul>\n<p><em>What will happen<\/em><\/p>\n<p>For cross-tenant guest users, the following Copilot capabilities are no longer available in Viva Glint:<\/p>\n<ul>\n<li>Copilot Highlights in Team Summary and Executive Summary reports<\/li>\n<li>The Copilot button and chat panel used for comment summarization<\/li>\n<li>The Copilot Summarize option in comments panels<\/li>\n<\/ul>\n<p>The following experiences are unchanged:<\/p>\n<ul>\n<li>Surveys<\/li>\n<li>Dashboards<\/li>\n<li>Reports<\/li>\n<li>Comments and related Viva Glint functionality<\/li>\n<li>Existing VFAM policies<\/li>\n<li>Viva Glint user roles and permissions<\/li>\n<li>Viva Glint licensing requirements<\/li>\n<li>Copilot experiences for users whose accounts are homed in your tenant<\/li>\n<\/ul>\n<p>A Microsoft Copilot license is not required for Copilot in Viva Glint. Assigning a Microsoft Copilot license to a cross-tenant guest user will not restore access to the affected features because the limitation exists in the underlying Copilot service.<\/p>\n<p>No administrative configuration changes are required.<\/p>\n<p><b>[Action required and recommendations]<\/b><\/p>\n<p>No action is required.<\/p>\n<p>We recommend that you:<\/p>\n<ul>\n<li>Review whether any Microsoft Entra guest users participate in your Viva Glint programs.<\/li>\n<li>Inform HR, people analytics, and survey program owners that affected guest users will no longer see Copilot features in Viva Glint.<\/li>\n<li>Review existing support requests involving Copilot errors or authentication failures for Viva Glint guest users, as they may be related to this service limitation.<\/li>\n<\/ul>\n<p><b>[Compliance considerations]<\/b><\/p>\n<p>No compliance considerations identified, review as appropriate for your organization.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<p><b>[\u4f55\u3068\u306a\u305c]<\/b><\/p>\n<p>2026\u5e748\u670826\u65e5\u3088\u308a\u3001Microsoft Viva Glint\u306eCopilot\u6a5f\u80fd\u306fMicrosoft Entra\u306e\u30af\u30ed\u30b9\u30c6\u30ca\u30f3\u30c8\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc(B2B\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc)\u306b\u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>Viva Glint\u306eCopilot\u306fMicrosoft Copilot\u306e\u5927\u898f\u6a21\u8a00\u8a9e\u30e2\u30c7\u30eb(LLM)\u30b5\u30fc\u30d3\u30b9\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u57fa\u76e4\u30b5\u30fc\u30d3\u30b9\u306f\u73fe\u5728\u3001\u30af\u30ed\u30b9\u30c6\u30ca\u30f3\u30c8\u306e\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u4ee5\u524d\u306f\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u8a8d\u8a3c\u30a8\u30e9\u30fc\u3084Copilot\u6a5f\u80fd\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3088\u308a\u4e00\u8cab\u3057\u305f\u4f53\u9a13\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u3001Viva Glint\u306f\u3053\u308c\u3089\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u5f71\u97ff\u3092\u53d7\u3051\u305fCopilot\u6a5f\u80fd\u3092\u8868\u793a\u305b\u305a\u975e\u8868\u793a\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5909\u66f4\u306f\u30e9\u30a4\u30bb\u30f3\u30b9\u3084Viva\u6a5f\u80fd\u30a2\u30af\u30bb\u30b9\u7ba1\u7406(VFAM)\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u3068\u306f\u95a2\u4fc2\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><b>[\u5c55\u958b\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb]<\/b><\/p>\n<ul>\n<li><b>\u4e00\u822c\u516c\u958b(\u4e16\u754c\u5c55\u958b):<\/b>\u5c55\u958b\u306f<b>2026\u5e748\u6708\u4e0b\u65ec<\/b>\u306b\u59cb\u307e\u308a\u3001<b>2026\u5e749\u6708<\/b>\u4e0b\u65ec\u306b\u5b8c\u4e86\u3059\u308b\u4e88\u5b9a\u3067\u3059<\/li>\n<\/ul>\n<p><b>[\u7d44\u7e54\u3078\u306e\u5f71\u97ff]<\/b><\/p>\n<p><em>\u5f71\u97ff\u3092\u53d7\u3051\u308b\u4eba\u7269<\/em><\/p>\n<ul>\n<li>Microsoft Entra\u306e\u30af\u30ed\u30b9\u30c6\u30ca\u30f3\u30c8\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u304c\u3042\u306a\u305f\u306e\u30c6\u30ca\u30f3\u30c8\u3067Viva Glint\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408<\/li>\n<li>Viva Glint\u306e\u7ba1\u7406\u8005\u3068\u30b5\u30dd\u30fc\u30c8\u30c1\u30fc\u30e0\u306e\u7686\u3055\u3093<\/li>\n<\/ul>\n<p><em>\u30db\u30fc\u30e0\u3068\u30b5\u30fc\u30d3\u30b9<\/em><\/p>\n<ul>\n<li>Microsoft Viva Glint<\/li>\n<li>Microsoft Entra ID<\/li>\n<\/ul>\n<p><em>\u4f55\u304c\u8d77\u3053\u308b\u306e\u304b<\/em><\/p>\n<p>\u30af\u30ed\u30b9\u30c6\u30ca\u30f3\u30c8\u306e\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u306b\u3001\u4ee5\u4e0b\u306eCopilot\u6a5f\u80fd\u306fViva Glint\u3067\u5229\u7528\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u30c1\u30fc\u30e0\u30b5\u30de\u30ea\u30fc\u304a\u3088\u3073\u30a8\u30b0\u30bc\u30af\u30c6\u30a3\u30d6\u30b5\u30de\u30ea\u30fc\u30ec\u30dd\u30fc\u30c8\u306b\u304a\u3051\u308b\u30b3\u30d1\u30a4\u30ed\u30c3\u30c8\u306e\u30cf\u30a4\u30e9\u30a4\u30c8<\/li>\n<li>\u30b3\u30e1\u30f3\u30c8\u8981\u7d04\u306b\u4f7f\u3046Copilot\u30dc\u30bf\u30f3\u3068\u30c1\u30e3\u30c3\u30c8\u30d1\u30cd\u30eb<\/li>\n<li>\u30b3\u30e1\u30f3\u30c8\u30d1\u30cd\u30eb\u306e\u300cCopilot Summarize\u300d\u30aa\u30d7\u30b7\u30e7\u30f3<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u306e\u4f53\u9a13\u306f\u5909\u308f\u3063\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li>\u8abf\u67fb<\/li>\n<li>\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9<\/li>\n<li>\u5831\u544a\u66f8<\/li>\n<li>\u30b3\u30e1\u30f3\u30c8\u304a\u3088\u3073Viva Glint\u306e\u95a2\u9023\u6a5f\u80fd<\/li>\n<li>\u65e2\u5b58\u306eVFAM\u65b9\u91dd<\/li>\n<li>Viva Glint \u30e6\u30fc\u30b6\u30fc\u30ed\u30fc\u30eb\u3068\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3<\/li>\n<li>Viva Glint\u306e\u30e9\u30a4\u30bb\u30f3\u30b9\u8981\u4ef6<\/li>\n<li>\u30c6\u30ca\u30f3\u30c8\u306b\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u306eCopilot\u4f53\u9a13<\/li>\n<\/ul>\n<p>Viva Glint\u306eCopilot\u306b\u306fMicrosoft Copilot\u30e9\u30a4\u30bb\u30f3\u30b9\u306f\u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002Microsoft Copilot\u30e9\u30a4\u30bb\u30f3\u30b9\u3092\u30af\u30ed\u30b9\u30c6\u30ca\u30f3\u30c8\u306e\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u306b\u5272\u308a\u5f53\u3066\u3066\u3082\u3001\u57fa\u76e4\u3068\u306a\u308bCopilot\u30b5\u30fc\u30d3\u30b9\u306b\u5236\u9650\u304c\u3042\u308b\u305f\u3081\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u6a5f\u80fd\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u5fa9\u5143\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u7ba1\u7406\u8a2d\u5b9a\u306e\u5909\u66f4\u306f\u4e0d\u8981\u3067\u3059\u3002<\/p>\n<p><b>[\u884c\u52d5\u304c\u5fc5\u8981\u3068\u63d0\u8a00]<\/b><\/p>\n<p>\u4f55\u306e\u5bfe\u5fdc\u3082\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u4ee5\u4e0b\u3092\u304a\u52e7\u3081\u3057\u307e\u3059:<\/p>\n<ul>\n<li>Microsoft Entra\u306e\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u304cViva Glint\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u53c2\u52a0\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u4eba\u4e8b\u3001\u4eba\u4e8b\u5206\u6790\u3001\u30a2\u30f3\u30b1\u30fc\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u904b\u55b6\u8005\u306b\u5bfe\u3057\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u306fViva Glint\u3067Copilot\u6a5f\u80fd\u3092\u5229\u7528\u3067\u304d\u306a\u304f\u306a\u308b\u3053\u3068\u3092\u4f1d\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>Viva 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