{"id":18059,"date":"2026-08-25T22:02:05","date_gmt":"2026-08-25T13:02:05","guid":{"rendered":"https:\/\/m365jp.net\/?p=18059"},"modified":"2026-08-25T22:07:10","modified_gmt":"2026-08-25T13:07:10","slug":"servicerestored-cw1461372-microsoft-365-copilot-chat-some-users-may-be-unable-to-receive-responses-when-using-microsoft-365-copilot-chat","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-08-25-servicerestored-cw1461372-microsoft-365-copilot-chat-some-users-may-be-unable-to-receive-responses-when-using-microsoft-365-copilot-chat","title":{"rendered":"[serviceRestored] CW1461372 | Microsoft 365 Copilot Chat | Some users may be unable to receive responses when using Microsoft 365 Copilot Chat"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">CW1461372 | Microsoft 365 Copilot Chat | Some users may be unable to receive responses when using Microsoft 365 Copilot Chat<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Status<\/th>\n<td class=\"bad\">serviceRestored<\/td>\n<\/tr>\n<tr>\n<th>Classification<\/th>\n<td>incident<\/td>\n<\/tr>\n<tr>\n<th>User Impact<\/th>\n<td>Users may be unable to receive responses when using Copilot Chat.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>08\/25\/2026 12:42:47<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>08\/24\/2026 22:50:00<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>08\/25\/2026 10:20:00<\/td>\n<\/tr>\n<tr>\n<th>Latest Message<\/th>\n<td>Title: Some users may have been unable to receive responses when using Microsoft 365 Copilot Chat<\/p>\n<p>  User impact: Users may have been unable to receive responses when using Copilot Chat.<\/p>\n<p>  More info: Affected users may have received error messages stating that a problem had occurred or that Copilot could not respond.<\/p>\n<p>  Final status: We&#8217;ve completed reverting the change that inadvertently led to impact. Upon completing a period of monitoring, we&#8217;ve determined service availability has returned to normal, and the issue is resolved.<\/p>\n<p>  Scope of impact: This issue may have impacted any user attempting to use Copilot Chat.<\/p>\n<p>  Start time: Monday, August 24, 2026, at 10:50 PM UTC<\/p>\n<p>  End time: Tuesday, August 25, 2026, at 10:20 AM UTC<\/p>\n<p>  Preliminary root cause: A recent change designed to support metered access for certain scenarios did not deliver the expected outcome, inadvertently resulting in impact.<\/p>\n<p>  Next steps:<br \/>  &#8211; We are reviewing our internal change management processes and controls to identify opportunities for improvement, and strengthen our safeguards around future changes.<\/p>\n<p>  We&#8217;ll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft 365 Copilot Chat\u3092\u4f7f\u7528\u3057\u305f\u969b\u306b\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u308c\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n<p>  \u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:Copilot Chat\u3092\u4f7f\u7528\u3057\u305f\u969b\u306b\u8fd4\u4fe1\u3092\u53d7\u3051\u53d6\u308c\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u3055\u3089\u306b\u60c5\u5831:\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u3001\u307e\u305f\u306fCopilot\u304c\u5fdc\u7b54\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u53d6\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u6700\u7d42\u72b6\u6cc1:\u8aa4\u3063\u3066\u5f71\u97ff\u3092\u4e0e\u3048\u305f\u5909\u66f4\u306e\u5143\u306b\u623b\u3057\u5b8c\u4e86\u3057\u307e\u3057\u305f\u3002\u76e3\u8996\u671f\u9593\u3092\u7d4c\u3066\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u5229\u7528\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u3001\u554f\u984c\u306f\u89e3\u6c7a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>  \u5f71\u97ff\u7bc4\u56f2:\u3053\u306e\u554f\u984c\u306fCopilot Chat\u3092\u5229\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u958b\u59cb\u6642\u9593:2026\u5e748\u670824\u65e5(\u6708)\u5348\u5f8c10\u664250\u5206(UTC)<\/p>\n<p>  \u7d42\u4e86\u6642\u523b:2026\u5e748\u670825\u65e5\u706b\u66dc\u65e5 \u5348\u524d10\u664220\u5206 UTC<\/p>\n<p>  \u4e88\u5099\u7684\u306a\u6839\u672c\u539f\u56e0:\u7279\u5b9a\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u30e1\u30fc\u30bf\u30fc\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\u3092\u652f\u63f4\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u305f\u6700\u8fd1\u306e\u5909\u66f4\u304c\u671f\u5f85\u3055\u308c\u305f\u7d50\u679c\u3092\u5f97\u3089\u308c\u305a\u3001\u7d50\u679c\u3068\u3057\u3066\u5f71\u97ff\u304c\u751f\u3058\u307e\u3057\u305f\u3002<\/p>\n<p>  \u6b21\u306e\u30b9\u30c6\u30c3\u30d7:<br \/>  &#8211; 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