{"id":14239,"date":"2025-12-11T03:00:59","date_gmt":"2025-12-10T18:00:59","guid":{"rendered":"https:\/\/m365jp.net\/?p=14239"},"modified":"2025-12-11T03:01:23","modified_gmt":"2025-12-10T18:01:23","slug":"servicerestored-dz1193885-microsoft-defender-xdr-some-users-may-be-unable-to-use-the-portal-and-public-api-in-microsoft-defender-for-endpoint-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-12-11-servicerestored-dz1193885-microsoft-defender-xdr-some-users-may-be-unable-to-use-the-portal-and-public-api-in-microsoft-defender-for-endpoint-2","title":{"rendered":"[serviceRestored] DZ1193885 | Microsoft Defender XDR | Some users may be unable to use the portal and public API in Microsoft Defender for Endpoint"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">DZ1193885 | Microsoft Defender XDR | Some users may be unable to use the portal and public API in Microsoft Defender for Endpoint<\/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>advisory<\/td>\n<\/tr>\n<tr>\n<th>User Impact<\/th>\n<td>Users may have been unable to use the portal and public API in Microsoft Defender for Endpoint.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>12\/10\/2025 17:17:15<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>12\/10\/2025 11:40:00<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>12\/10\/2025 13:40:00<\/td>\n<\/tr>\n<tr>\n<th>Latest Message<\/th>\n<td>Title: Some users may be unable to use the portal and public API in Microsoft Defender for Endpoint<\/p>\n<p>  User impact: Users may have been unable to use the portal and public API in Microsoft Defender for Endpoint.<\/p>\n<p>  More info: Some users were unable to access device-related operations and pages through the portal and public API in Microsoft Defender for Endpoint.<\/p>\n<p>  Final status: We identified that a portion of routing logic that supports traffic management for Microsoft Defender for Endpoint infrastructure wasn\u2019t operating as expected, resulting in impact. To remediate this, we&#8217;ve corrected the routing configuration to   ensure service traffic was directed to the appropriate infrastructure. After monitoring the service, we\u2019ve verified that this action has successfully resolved the issue.<\/p>\n<p>  Scope of impact: Some users located in Europe and United States regions who attempted to use device-related operations and pages through the portal and public API in Microsoft Defender for Endpoint may have been impacted.<\/p>\n<p>  Start time: Monday, December 10, 2025, at 11:40 AM UTC<\/p>\n<p>  End time: Wednesday, December 10, 2025, at 1:40 PM UTC<\/p>\n<p>  Root cause: A portion of routing logic that supports traffic management for Microsoft Defender for Endpoint infrastructure wasn\u2019t operating as expected, resulting in impact.  <\/p>\n<p>  Next steps:<br \/>  &#8211; We&#8217;re investigating how the portion of routing logic that supports traffic management for Microsoft Defender for Endpoint infrastructure was introduced and not detected as an impacting configuration prior to implementation to prevent this problem from happening   again.<\/p>\n<p>  This is the final update for the event.<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft Defender for Endpoint\u306e\u30dd\u30fc\u30bf\u30eb\u304a\u3088\u3073\u516c\u958bAPI\u3092\u5229\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n<p>  \u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:Microsoft Defender for Endpoint\u306e\u30dd\u30fc\u30bf\u30eb\u3084\u516c\u958bAPI\u3092\u30e6\u30fc\u30b6\u30fc\u304c\u5229\u7528\u3067\u304d\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u8a73\u7d30\u60c5\u5831:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft Defender for Endpoint\u306e\u30dd\u30fc\u30bf\u30eb\u3084\u516c\u958bAPI\u3092\u901a\u3058\u3066\u30c7\u30d0\u30a4\u30b9\u95a2\u9023\u306e\u64cd\u4f5c\u3084\u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>  \u6700\u7d42\u72b6\u6cc1:Microsoft Defender for Endpoint\u306e\u30a4\u30f3\u30d5\u30e9\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u7ba1\u7406\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30ed\u30b8\u30c3\u30af\u306e\u4e00\u90e8\u304c\u671f\u5f85\u901a\u308a\u306b\u52d5\u4f5c\u3057\u3066\u304a\u3089\u305a\u3001\u5f71\u97ff\u304c\u51fa\u3066\u3044\u308b\u3053\u3068\u3092\u7279\u5b9a\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8a2d\u5b9a\u3092\u4fee\u6b63\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u9069\u5207\u306a\u30a4\u30f3\u30d5\u30e9\u306b\u8a98\u5c0e\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002\u30b5\u30fc\u30d3\u30b9\u3092\u76e3\u8996\u3057\u305f\u7d50\u679c\u3001\u3053\u306e\u5bfe\u5fdc\u304c\u554f\u984c\u3092\u6b63\u5e38\u306b\u89e3\u6c7a\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>  \u5f71\u97ff\u7bc4\u56f2:\u30e8\u30fc\u30ed\u30c3\u30d1\u304a\u3088\u3073\u7c73\u56fd\u5730\u57df\u306b\u3044\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u3001Microsoft Defender for Endpoint\u306e\u30dd\u30fc\u30bf\u30eb\u304a\u3088\u3073\u516c\u958bAPI\u3092\u901a\u3058\u3066\u30c7\u30d0\u30a4\u30b9\u95a2\u9023\u306e\u64cd\u4f5c\u3084\u30da\u30fc\u30b8\u3092\u5229\u7528\u3057\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u958b\u59cb\u6642\u9593:2025\u5e7412\u670810\u65e5(\u6708)\u5348\u524d11\u664240\u5206(UTC)<\/p>\n<p>  \u7d42\u4e86\u6642\u523b:2025\u5e7412\u670810\u65e5\u6c34\u66dc\u65e5 \u5348\u5f8c1\u664240\u5206 UTC<\/p>\n<p>  \u6839\u672c\u539f\u56e0:Microsoft Defender for Endpoint\u306e\u30a4\u30f3\u30d5\u30e9\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u7ba1\u7406\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30ed\u30b8\u30c3\u30af\u306e\u4e00\u90e8\u304c\u671f\u5f85\u901a\u308a\u306b\u52d5\u4f5c\u305b\u305a\u3001\u5f71\u97ff\u304c\u51fa\u307e\u3057\u305f\u3002<\/p>\n<p>  \u6b21\u306e\u30b9\u30c6\u30c3\u30d7:<br \/>  &#8211; 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