{"id":14590,"date":"2026-01-22T02:01:22","date_gmt":"2026-01-21T17:01:22","guid":{"rendered":"https:\/\/m365jp.net\/?p=14590"},"modified":"2026-01-22T02:14:59","modified_gmt":"2026-01-21T17:14:59","slug":"servicedegradation-dz1220491-microsoft-defender-xdr-some-admins-may-see-automated-investigation-and-response-air-remediation-actions-affecting-more-emails-than-intended","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-01-22-servicedegradation-dz1220491-microsoft-defender-xdr-some-admins-may-see-automated-investigation-and-response-air-remediation-actions-affecting-more-emails-than-intended","title":{"rendered":"[serviceDegradation] DZ1220491 | Microsoft Defender XDR | Some admins may see automated investigation and response (AIR) remediation actions affecting more emails than intended"},"content":{"rendered":"
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DZ1220491 | Microsoft Defender XDR | Some admins may see automated investigation and response (AIR) remediation actions affecting more emails than intended<\/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 see AIR remediation actions affecting more emails than intended in Microsoft Defender for Office 365.<\/td>\n<\/tr>\n
Last Updated<\/th>\n01\/21\/2026 16:47:29<\/td>\n<\/tr>\n
Start Time<\/th>\n01\/21\/2026 16:24:35<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some admins may see automated investigation and response (AIR) remediation actions affecting more emails than intended<\/p>\n

User impact: Admins may see AIR remediation actions affecting more emails than intended in Microsoft Defender for Office 365.<\/p>\n

More info: Some admins utilizing AIR remediation based on email subject matching may experience additional email being included in a remediation action beyond the originally intended scope.<\/p>\n

Admins can manually approve or deny proposed remediation actions, and we advise admins to review these remediation actions for potentially impacted email messages from your organization. If admins are utilizing automated remediation actions, we advise admins to review these automated actions for additional email being included beyond the originally intended scope.<\/p>\n

Automated email remediation actions will be temporarily disabled while we investigate and work to resolve the offending impact scenario.<\/p>\n

Current status: We’ve validated that admins utilizing automated investigation and response (AIR) email remediation actions encompass additional email beyond the intended scope. We’ve updated the “Title”, “User impact”, and “Scope of impact” to align with the updated impact scenario, and we’ve provided information pertaining to the impact scenario in the “More info” section of this communication. We’re pausing automated email remediation actions temporarily to prevent additional emails from being affected, while we continue to analyze and isolate the underlying impact scenario to determine our next troubleshooting steps to remediate impact.<\/p>\n

Scope of impact: Impact is specific to some admins attempting to utilize AIR remediation based on email subject matching in Microsoft Defender for Office 365.<\/p>\n

Next update by: Wednesday, January 21, 2026, at 6:30 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u7ba1\u7406\u8005\u306f\u3001\u81ea\u52d5\u8abf\u67fb\u30fb\u5bfe\u5fdc(AIR)\u306e\u662f\u6b63\u63aa\u7f6e\u304c\u610f\u56f3\u4ee5\u4e0a\u306e\u30e1\u30fc\u30eb\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3057\u3066\u3044\u308b\u3068\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u7ba1\u7406\u8005\u306f\u3001Microsoft Defender for Office 365\u3067\u610f\u56f3\u3057\u305f\u3088\u308a\u591a\u304f\u306e\u30e1\u30fc\u30eb\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308bAIR\u306e\u4fee\u6b63\u63aa\u7f6e\u3092\u76ee\u306b\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u30e1\u30fc\u30eb\u306e\u4ef6\u540d\u4e00\u81f4\u306b\u57fa\u3065\u304fAIR\u5bfe\u7b56\u3092\u5229\u7528\u3059\u308b\u7ba1\u7406\u8005\u306e\u4e2d\u306b\u306f\u3001\u5f53\u521d\u306e\u610f\u56f3\u7bc4\u56f2\u3092\u8d85\u3048\u305f\u8ffd\u52a0\u306e\u30e1\u30fc\u30eb\u304c\u4fee\u6b63\u63aa\u7f6e\u306b\u542b\u307e\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u7ba1\u7406\u8005\u306f\u63d0\u6848\u3055\u308c\u305f\u662f\u6b63\u63aa\u7f6e\u3092\u624b\u52d5\u3067\u627f\u8a8d\u307e\u305f\u306f\u62d2\u5426\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u7ba1\u7406\u8005\u306f\u7d44\u7e54\u304b\u3089\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u3064\u3044\u3066\u3053\u308c\u3089\u306e\u662f\u6b63\u63aa\u7f6e\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u7ba1\u7406\u8005\u304c\u81ea\u52d5\u4fee\u5fa9\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u5f53\u521d\u306e\u610f\u56f3\u7bc4\u56f2\u3092\u8d85\u3048\u305f\u8ffd\u52a0\u306e\u30e1\u30fc\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3001\u3053\u308c\u3089\u306e\u81ea\u52d5\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n

\u81ea\u52d5\u30e1\u30fc\u30eb\u5bfe\u5fdc\u306f\u3001\u554f\u984c\u306e\u8abf\u67fb\u3068\u89e3\u6c7a\u4f5c\u696d\u306e\u9593\u3001\u4e00\u6642\u7684\u306b\u505c\u6b62\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u73fe\u72b6:\u81ea\u52d5\u8abf\u67fb\u30fb\u5fdc\u7b54(AIR)\u30e1\u30fc\u30eb\u4fee\u5fa9\u63aa\u7f6e\u3092\u5229\u7528\u3059\u308b\u7ba1\u7406\u8005\u304c\u3001\u610f\u56f3\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u305f\u8ffd\u52a0\u306e\u30e1\u30fc\u30eb\u3092\u542b\u3080\u3053\u3068\u3092\u691c\u8a3c\u3057\u307e\u3057\u305f\u3002\u300c\u30bf\u30a4\u30c8\u30eb\u300d\u3001\u300c\u30e6\u30fc\u30b6\u30fc\u5f71\u97ff\u300d\u3001\u300c\u5f71\u97ff\u306e\u7bc4\u56f2\u300d\u3092\u66f4\u65b0\u3057\u305f\u5f71\u97ff\u30b7\u30ca\u30ea\u30aa\u306b\u5408\u308f\u305b\u3066\u66f4\u65b0\u3057\u3001\u3053\u306e\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u300c\u8a73\u7d30\u60c5\u5831\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u5f71\u97ff\u30b7\u30ca\u30ea\u30aa\u306b\u95a2\u3059\u308b\u60c5\u5831\u3082\u63b2\u8f09\u3057\u3066\u3044\u307e\u3059\u3002\u81ea\u52d5\u30e1\u30fc\u30eb\u4fee\u5fa9\u4f5c\u696d\u306f\u4e00\u6642\u7684\u306b\u4e00\u6642\u505c\u6b62\u3057\u3001\u8ffd\u52a0\u306e\u30e1\u30fc\u30eb\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u3001\u6839\u5e95\u306b\u3042\u308b\u5f71\u97ff\u30b7\u30ca\u30ea\u30aa\u306e\u5206\u6790\u3068\u9694\u96e2\u3092\u7d9a\u3051\u3001\u6b21\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30b9\u30c6\u30c3\u30d7\u3092\u6c7a\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u5f71\u97ff\u306fMicrosoft Defender for Office 365\u3067\u30e1\u30fc\u30eb\u306e\u4ef6\u540d\u30de\u30c3\u30c1\u30f3\u30b0\u306b\u57fa\u3065\u304fAIR\u4fee\u5fa9\u3092\u8a66\u307f\u308b\u4e00\u90e8\u306e\u7ba1\u7406\u8005\u306b\u7279\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2026\u5e741\u670821\u65e5\u6c34\u66dc\u65e5 \u5348\u5f8c6\u664230\u5206 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

DZ1220491 | Microsoft Defender XDR | Some admins may see automated investigation and response (AIR) remediatio […]<\/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-14590","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14590","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=14590"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14590\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=14590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=14590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=14590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}