{"id":14601,"date":"2026-01-22T05:01:00","date_gmt":"2026-01-21T20:01:00","guid":{"rendered":"https:\/\/m365jp.net\/?p=14601"},"modified":"2026-01-22T05:10:36","modified_gmt":"2026-01-21T20:10:36","slug":"servicedegradation-dz1220491-microsoft-defender-xdr-some-admins-may-see-automated-investigation-and-response-air-remediation-actions-affecting-more-emails-than-intended-3","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-3","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 19:40:19<\/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 completed our final validations for two configuration changes to pause automated email remediation actions temporarily to prevent additional email messages from being affected and to correct the number of email messages to be remediated by admins in AIR to reflect the correct number of events. We anticipate these changes to begin deployment by the time of our next scheduled update. Simultaneously we’re analyzing a recent AIR migration for potential discrepancies that may point to the underlying root cause of 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 10:00 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

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\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\u30e1\u30fc\u30eb\u4fee\u6b63\u4f5c\u696d\u3092\u4e00\u6642\u505c\u6b62\u3057\u3066\u8ffd\u52a0\u306e\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u8a2d\u5b9a\u5909\u66f4\u306e\u6700\u7d42\u691c\u8a3c\u3092\u5b8c\u4e86\u3057\u3001AIR\u306e\u7ba1\u7406\u8005\u304c\u5bfe\u5fdc\u3059\u3079\u304d\u30e1\u30fc\u30eb\u6570\u3092\u6b63\u3057\u3044\u30a4\u30d9\u30f3\u30c8\u6570\u306b\u53cd\u6620\u3055\u305b\u308b\u305f\u3081\u306e\u4fee\u6b63\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u5909\u66f4\u306f\u3001\u6b21\u56de\u306e\u4e88\u5b9a\u3055\u308c\u305f\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u307e\u3067\u306b\u5c55\u958b\u304c\u59cb\u307e\u308b\u3068\u4e88\u60f3\u3057\u3066\u3044\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u6700\u8fd1\u306eAIR\u79fb\u52d5\u306b\u3064\u3044\u3066\u3001\u5f71\u97ff\u306e\u6839\u672c\u539f\u56e0\u3092\u793a\u3059\u53ef\u80fd\u6027\u306e\u3042\u308b\u4e0d\u4e00\u81f4\u3092\u5206\u6790\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\u65e5:2026\u5e741\u670821\u65e5\u6c34\u66dc\u65e5 \u5348\u5f8c10\u6642 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-14601","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14601","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=14601"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14601\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=14601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=14601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=14601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}