{"id":16011,"date":"2026-04-18T10:00:59","date_gmt":"2026-04-18T01:00:59","guid":{"rendered":"https:\/\/m365jp.net\/?p=16011"},"modified":"2026-04-18T10:01:49","modified_gmt":"2026-04-18T01:01:49","slug":"investigating-dz1283890-microsoft-defender-xdr-users-may-experience-delays-and-see-failures-with-multiple-functions-in-microsoft-defender","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-18-investigating-dz1283890-microsoft-defender-xdr-users-may-experience-delays-and-see-failures-with-multiple-functions-in-microsoft-defender","title":{"rendered":"[investigating] DZ1283890 | Microsoft Defender XDR | Users may experience delays and see failures with multiple functions in Microsoft Defender"},"content":{"rendered":"
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DZ1283890 | Microsoft Defender XDR | Users may experience delays and see failures with multiple functions in Microsoft Defender<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\ninvestigating<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may experience delays and see failures with multiple functions in Microsoft Defender.<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/18\/2026 00:03:35<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/17\/2026 23:43:52<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may experience delays and see failures with multiple functions in Microsoft Defender<\/p>\n

User impact: Users may experience delays and see failures with multiple functions in Microsoft Defender.<\/p>\n

More info: Some users may experience delays and failures with the following functions:
– Threat Explorer
– Defender Portal explorer
– Email entity
– Advanced hunting<\/p>\n

Current status: We\u2019ve determined that impact detailed within DZ1282661 is still occurring for a subset of affected users. We\u2019re monitoring the affected infrastructure to determine if additional remediation will be required, or if the service needs additional time to stabilize. <\/p>\n

Scope of impact: This event could impact some Microsoft Defender users serviced through North America, who are attempting to utilize functions such as Threat Explorer, Defender Portal explorer, Email entity, and Advanced hunting. This section may be updated as our investigation continues.<\/p>\n

Start time: Thursday, April 16, 2026, at 6:00 PM UTC<\/p>\n

Root cause: Increased traffic to a portion of the service infrastructure is causing failures for users who are attempting to utilize functions such as Threat Explorer, Defender Portal explorer, Email entity, and Advanced hunting and is resulting in this impact.<\/p>\n

Next update by: Saturday, April 18, 2026, at 6:00 AM UTC <\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:Microsoft Defender\u3067\u8907\u6570\u306e\u6a5f\u80fd\u3067\u9045\u5ef6\u3084\u969c\u5bb3\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:Microsoft Defender\u3067\u306f\u8907\u6570\u306e\u6a5f\u80fd\u3067\u9045\u5ef6\u3084\u969c\u5bb3\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u4ee5\u4e0b\u306e\u6a5f\u80fd\u3067\u9045\u5ef6\u3084\u6545\u969c\u3092\u7d4c\u9a13\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059:
– \u8105\u5a01\u30a8\u30af\u30b9\u30d7\u30ed\u30fc\u30e9\u30fc
– Defender Portal \u30a8\u30af\u30b9\u30d7\u30ed\u30fc\u30e9\u30fc
– \u30e1\u30fc\u30eb\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3
– \u9ad8\u5ea6\u306a\u72e9\u731f<\/p>\n

\u73fe\u72b6:DZ1282661\u306b\u8a18\u8f09\u3055\u308c\u305f\u5f71\u97ff\u304c\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u4f9d\u7136\u3068\u3057\u3066\u767a\u751f\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30a4\u30f3\u30d5\u30e9\u3092\u76e3\u8996\u3057\u3001\u8ffd\u52a0\u306e\u4fee\u5fa9\u304c\u5fc5\u8981\u304b\u3069\u3046\u304b\u3001\u3042\u308b\u3044\u306f\u30b5\u30fc\u30d3\u30b9\u306e\u5b89\u5b9a\u5316\u306b\u3055\u3089\u306a\u308b\u6642\u9593\u304c\u5fc5\u8981\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u306f\u3001\u5317\u7c73\u3067\u30b5\u30fc\u30d3\u30b9\u3092\u53d7\u3051\u308bMicrosoft Defender\u30e6\u30fc\u30b6\u30fc\u306e\u4e00\u90e8\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u5f7c\u3089\u306fThreat Explorer\u3001Defender Portal explorer\u3001Email entity\u3001Advanced Hunting\u306a\u3069\u306e\u6a5f\u80fd\u3092\u5229\u7528\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306f\u8abf\u67fb\u304c\u9032\u3080\u306b\u3064\u308c\u3066\u66f4\u65b0\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e744\u670816\u65e5\u6728\u66dc\u65e5 \u5348\u5f8c6\u6642 UTC<\/p>\n

\u6839\u672c\u539f\u56e0:\u30b5\u30fc\u30d3\u30b9\u30a4\u30f3\u30d5\u30e9\u306e\u4e00\u90e8\u3078\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5897\u52a0\u306b\u3088\u308a\u3001Threat Explorer\u3001Defender Portal explorer\u3001Email entity\u3001Advanced Hunting\u306a\u3069\u306e\u6a5f\u80fd\u3092\u5229\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u5931\u6557\u3057\u3001\u3053\u306e\u5f71\u97ff\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2026\u5e744\u670818\u65e5\u571f\u66dc\u65e5 \u5348\u524d6\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

DZ1283890 | Microsoft Defender XDR | Users may experience delays and see failures with multiple functions in M […]<\/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-16011","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16011","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=16011"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16011\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=16011"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=16011"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=16011"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}