{"id":14709,"date":"2026-01-29T05:00:59","date_gmt":"2026-01-28T20:00:59","guid":{"rendered":"https:\/\/m365jp.net\/?p=14709"},"modified":"2026-01-29T05:02:39","modified_gmt":"2026-01-28T20:02:39","slug":"servicerestored-dz1223715-microsoft-defender-xdr-users-may-be-unable-to-access-threat-analytics-in-the-microsoft-defender-xdr-portal","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-01-29-servicerestored-dz1223715-microsoft-defender-xdr-users-may-be-unable-to-access-threat-analytics-in-the-microsoft-defender-xdr-portal","title":{"rendered":"[serviceRestored] DZ1223715 | Microsoft Defender XDR | Users may be unable to access Threat Analytics in the Microsoft Defender XDR portal"},"content":{"rendered":"
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DZ1223715 | Microsoft Defender XDR | Users may be unable to access Threat Analytics in the Microsoft Defender XDR portal<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may have been unable to access Threat Analytics in the Microsoft Defender XDR portal.<\/td>\n<\/tr>\n
Last Updated<\/th>\n01\/28\/2026 19:30:38<\/td>\n<\/tr>\n
Start Time<\/th>\n01\/28\/2026 17:14:00<\/td>\n<\/tr>\n
End Time<\/th>\n01\/28\/2026 18:22:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to access Threat Analytics in the Microsoft Defender XDR portal<\/p>\n

User impact: Users may have been unable to access Threat Analytics in the Microsoft Defender XDR portal.<\/p>\n

Final status: We determined that the cache infrastructure performance had fallen below suboptimal thresholds, and we applied manual mitigations to the affected portions of the infrastructure to relieve this impact. After a period of monitoring, we confirmed that the service returned to a healthy state.<\/p>\n

Scope of impact: Any user attempting to access Threat Analytics in the Microsoft Defender XDR portal may have been impacted by this event.<\/p>\n

Start time: Wednesday, January 28, 2026, at 5:14 PM UTC<\/p>\n

End time: Wednesday, January 28, 2026, at 6:22 PM UTC<\/p>\n

Root cause: The cache infrastructure performance fell below suboptimal thresholds, resulting in this impact.<\/p>\n

Next steps:
– We’re reviewing the cache infrastructure to better understand what led to the error that resulted in impact and prevent similar future occurrences.<\/p>\n

This is the final update for the event.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:Microsoft Defender XDR\u30dd\u30fc\u30bf\u30eb\u3067\u30e6\u30fc\u30b6\u30fc\u304c\u8105\u5a01\u5206\u6790\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:Microsoft Defender XDR\u30dd\u30fc\u30bf\u30eb\u306e\u8105\u5a01\u5206\u6790\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u30ad\u30e3\u30c3\u30b7\u30e5\u30a4\u30f3\u30d5\u30e9\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u6700\u9069\u3067\u306a\u3044\u95be\u5024\u3092\u4e0b\u56de\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30a4\u30f3\u30d5\u30e9\u90e8\u5206\u306b\u624b\u52d5\u3067\u7de9\u548c\u63aa\u7f6e\u3092\u9069\u7528\u3057\u307e\u3057\u305f\u3002\u3057\u3070\u3089\u304f\u306e\u76e3\u8996\u306e\u5f8c\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u5065\u5eb7\u306a\u72b6\u614b\u306b\u623b\u3063\u305f\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:Microsoft Defender XDR\u30dd\u30fc\u30bf\u30eb\u3067\u8105\u5a01\u5206\u6790\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u5f71\u97ff\u3092\u53d7\u3051\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e741\u670828\u65e5\u6c34\u66dc\u65e5 17:14 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e741\u670828\u65e5\u6c34\u66dc\u65e5 \u5348\u5f8c6\u664222\u5206 UTC<\/p>\n

\u6839\u672c\u539f\u56e0:\u30ad\u30e3\u30c3\u30b7\u30e5\u30a4\u30f3\u30d5\u30e9\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u6700\u9069\u3067\u306a\u3044\u95be\u5024\u3092\u4e0b\u56de\u308a\u3001\u3053\u306e\u5f71\u97ff\u304c\u751f\u3058\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u79c1\u305f\u3061\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30a4\u30f3\u30d5\u30e9\u3092\u898b\u76f4\u3057\u3001\u5f71\u97ff\u3092\u53ca\u307c\u3057\u305f\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3057\u3001\u540c\u69d8\u306e\u518d\u767a\u3092\u9632\u3050\u305f\u3081\u306b\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3053\u308c\u304c\u30a4\u30d9\u30f3\u30c8\u306e\u6700\u7d42\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

DZ1223715 | Microsoft Defender XDR | Users may be unable to access Threat Analytics in the Microsoft Defender […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14709","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=14709"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14709\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=14709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=14709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=14709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}