{"id":18828,"date":"2026-10-08T05:01:51","date_gmt":"2026-10-07T20:01:51","guid":{"rendered":"https:\/\/m365jp.net\/?p=18828"},"modified":"2026-10-08T05:02:10","modified_gmt":"2026-10-07T20:02:10","slug":"servicedegradation-dz1490573-microsoft-defender-xdr-some-admins-may-be-unable-to-access-the-action-center-in-the-microsoft-defender-portal-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-10-08-servicedegradation-dz1490573-microsoft-defender-xdr-some-admins-may-be-unable-to-access-the-action-center-in-the-microsoft-defender-portal-2","title":{"rendered":"[serviceDegradation] DZ1490573 | Microsoft Defender XDR | Some admins may be unable to access the Action center in the Microsoft Defender portal"},"content":{"rendered":"
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DZ1490573 | Microsoft Defender XDR | Some admins may be unable to access the Action center in the Microsoft Defender portal<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nAdmins may be unable to access the Action center in the Microsoft Defender portal.<\/td>\n<\/tr>\n
Last Updated<\/th>\n10\/07\/2026 19:01:14<\/td>\n<\/tr>\n
Start Time<\/th>\n10\/07\/2026 17:01:44<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some admins may be unable to access the Action center in the Microsoft Defender portal <\/p>\n

User impact: Admins may be unable to access the Action center in the Microsoft Defender portal. <\/p>\n

More info: Admins report that clicking on the Action center causes the page to stall and never load. <\/p>\n

Current status: After further analysis of the internal reproduction of impact, we’ve isolated that impact is broader than initially diagnosed and we’ve expanded our communications to encompass all potentially affected admins. We’ve updated the “Title”, “User impact”, and “Scope of impact” fields of our communications to reflect this change.<\/p>\n

We’ve isolated that a recent update to migrate to a new code base for the Microsoft Defender portal contained a failing component that\u2019s resulting in stalling and failures when admins attempt to access the Action center. We’re rolling back the problematic update to remediate impact, and we anticipate this process to be completed by our next scheduled update. <\/p>\n

Scope of impact: Some admins may be unable to access the Action center in the Microsoft Defender portal as the page stalls and never loads. This section may be updated as the investigation progresses. <\/p>\n

Root cause: A recent update to migrate to a new code base for the Microsoft Defender portal contained a failing component that\u2019s resulting in stalling and failures when admins attempt to access the Action center. <\/p>\n

Next update by: Wednesday, October 7, 2026, at 9:00 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u7ba1\u7406\u8005\u306fMicrosoft Defender\u30dd\u30fc\u30bf\u30eb\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc\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:\u7ba1\u7406\u8005\u306fMicrosoft Defender\u30dd\u30fc\u30bf\u30eb\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n

\u3055\u3089\u306b\u8a73\u3057\u304f:\u7ba1\u7406\u8005\u306b\u3088\u308b\u3068\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u30da\u30fc\u30b8\u304c\u505c\u6b62\u3057\u3001\u8aad\u307f\u8fbc\u307e\u308c\u306a\u3044\u3068\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n

\u73fe\u72b6:\u5185\u90e8\u306e\u5f71\u97ff\u306e\u518d\u751f\u7523\u3092\u3055\u3089\u306b\u5206\u6790\u3057\u305f\u7d50\u679c\u3001\u5f71\u97ff\u304c\u5f53\u521d\u8a3a\u65ad\u3055\u308c\u305f\u3088\u308a\u3082\u5e83\u7bc4\u56f2\u3067\u3042\u308b\u3053\u3068\u3092\u7279\u5b9a\u3057\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u3059\u3079\u3066\u306e\u7ba1\u7406\u8005\u3092\u542b\u3080\u3088\u3046\u306b\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u62e1\u5927\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u5909\u66f4\u3092\u53cd\u6620\u3059\u308b\u305f\u3081\u306b\u3001\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u300c\u30bf\u30a4\u30c8\u30eb\u300d\u300c\u30e6\u30fc\u30b6\u30fc\u5f71\u97ff\u300d\u300c\u5f71\u97ff\u7bc4\u56f2\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u66f4\u65b0\u3057\u307e\u3057\u305f\u3002<\/p>\n

Microsoft Defender\u30dd\u30fc\u30bf\u30eb\u306e\u65b0\u3057\u3044\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3078\u306e\u79fb\u884c\u3092\u76ee\u7684\u3068\u3057\u305f\u6700\u8fd1\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306b\u3001\u7ba1\u7406\u8005\u304c\u30a2\u30af\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\u969b\u306b\u505c\u6b62\u3084\u5931\u6557\u3092\u5f15\u304d\u8d77\u3053\u3059\u5931\u6557\u3057\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u7279\u5b9a\u3057\u307e\u3057\u305f\u3002\u554f\u984c\u306e\u3042\u308b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3057\u3066\u5f71\u97ff\u3092\u88dc\u6b63\u3057\u3066\u304a\u308a\u3001\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u6b21\u56de\u306e\u4e88\u5b9a\u66f4\u65b0\u307e\u3067\u306b\u5b8c\u4e86\u3059\u308b\u3068\u4e88\u60f3\u3057\u3066\u3044\u307e\u3059\u3002 <\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u4e00\u90e8\u306e\u7ba1\u7406\u8005\u306f\u3001\u30da\u30fc\u30b8\u304c\u505c\u6b62\u3057\u8aad\u307f\u8fbc\u307e\u308c\u306a\u3044\u305f\u3081\u3001Microsoft Defender\u30dd\u30fc\u30bf\u30eb\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306f\u8abf\u67fb\u306e\u9032\u5c55\u306b\u4f34\u3044\u66f4\u65b0\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n

\u6839\u672c\u539f\u56e0:Microsoft Defender\u30dd\u30fc\u30bf\u30eb\u306e\u65b0\u3057\u3044\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3078\u306e\u79fb\u884c\u3092\u76ee\u7684\u3068\u3057\u305f\u6700\u8fd1\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3001\u7ba1\u7406\u8005\u304c\u30a2\u30af\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\u969b\u306b\u505c\u6b62\u3084\u5931\u6557\u3092\u5f15\u304d\u8d77\u3053\u3059\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3057\u305f\u3002 <\/p>\n

\u6b21\u56de\u66f4\u65b0\u65e5:2026\u5e7410\u67087\u65e5\u6c34\u66dc\u65e5 \u5348\u5f8c9\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

DZ1490573 | Microsoft Defender XDR | Some admins may be unable to access the Action center in the Microsoft De […]<\/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-18828","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18828","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=18828"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18828\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=18828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=18828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=18828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}