{"id":16127,"date":"2026-04-28T00:08:08","date_gmt":"2026-04-27T15:08:08","guid":{"rendered":"https:\/\/m365jp.net\/?p=16127"},"modified":"2026-04-28T00:11:10","modified_gmt":"2026-04-27T15:11:10","slug":"servicerestored-dz1289015-microsoft-defender-xdr-admins-may-have-encountered-delays-of-up-to-10-hours-for-grading-results-on-microsoft-defender-for-office-365-submission","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-28-servicerestored-dz1289015-microsoft-defender-xdr-admins-may-have-encountered-delays-of-up-to-10-hours-for-grading-results-on-microsoft-defender-for-office-365-submission","title":{"rendered":"[serviceRestored] DZ1289015 | Microsoft Defender XDR | Admins may have encountered delays of up to 10 hours for grading results on Microsoft Defender for Office 365 submission"},"content":{"rendered":"
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DZ1289015 | Microsoft Defender XDR | Admins may have encountered delays of up to 10 hours for grading results on Microsoft Defender for Office 365 submission<\/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>\nAdmins may have encountered delays of up to 10 hours for grading results on Microsoft Defender for Office 365 submission<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/27\/2026 14:57:14<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/23\/2026 06:36:00<\/td>\n<\/tr>\n
End Time<\/th>\n04\/27\/2026 02:39:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Admins may have encountered delays of up to 10 hours for grading results on Microsoft Defender for Office 365 submissions page<\/p>\n

User impact: Admins may have encountered delays of up to 10 hours for grading results on Microsoft Defender for Office 365 submissions page.<\/p>\n

Final status: We\u2019ve confirmed, following a period monitoring service telemetry, that the performance optimizations we applied to improve processing capacities successfully remediated the issue.<\/p>\n

Scope of impact: Impact was specific to any admin served through the affected infrastructure expecting email submission grading.<\/p>\n

Start time: Thursday, April 23, 2026, at 6:36 AM UTC<\/p>\n

End time: Monday, April 27, 2026, at 2:39 AM UTC<\/p>\n

Root cause: An increase in requests caused a section of infrastructure responsible for processing email submission grading to perform below acceptable performance thresholds resulting in impact.<\/p>\n

Next steps:
– We\u2019re reviewing our service resilience processes to help us reduce or avoid similar issues in the future.<\/p>\n

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

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u7ba1\u7406\u8005\u306fMicrosoft Defender for Office 365\u306e\u63d0\u51fa\u30da\u30fc\u30b8\u3067\u3001\u63a1\u70b9\u7d50\u679c\u306b\u6700\u592710\u6642\u9593\u306e\u9045\u5ef6\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u7ba1\u7406\u8005\u306fMicrosoft Defender for Office 365\u306e\u63d0\u51fa\u30da\u30fc\u30b8\u3067\u7d50\u679c\u306e\u63a1\u70b9\u306b\u6700\u592710\u6642\u9593\u9045\u308c\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u30b5\u30fc\u30d3\u30b9\u30c6\u30ec\u30e1\u30c8\u30ea\u306e\u76e3\u8996\u671f\u9593\u3092\u7d4c\u3066\u3001\u51e6\u7406\u80fd\u529b\u5411\u4e0a\u306e\u305f\u3081\u306b\u9069\u7528\u3057\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u304c\u554f\u984c\u3092\u6b63\u5e38\u306b\u89e3\u6c7a\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u5f71\u97ff\u306f\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30a4\u30f3\u30d5\u30e9\u3092\u901a\u3058\u3066\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u8a55\u4fa1\u3092\u671f\u5f85\u3059\u308b\u7ba1\u7406\u8005\u306b\u7279\u5316\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e744\u670823\u65e5\u6728\u66dc\u65e5 \u5348\u524d6\u664236\u5206 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e744\u670827\u65e5(\u6708)\u5348\u524d2\u664239\u5206(UTC)<\/p>\n

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\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u4eca\u5f8c\u540c\u69d8\u306e\u554f\u984c\u3092\u8efd\u6e1b\u307e\u305f\u306f\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u3001\u30b5\u30fc\u30d3\u30b9\u30ec\u30b8\u30ea\u30a8\u30f3\u30b9\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u898b\u76f4\u3057\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":"

DZ1289015 | Microsoft Defender XDR | Admins may have encountered delays of up to 10 hours for grading results […]<\/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-16127","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16127","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=16127"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16127\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=16127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=16127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=16127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}