{"id":15977,"date":"2026-04-17T03:00:57","date_gmt":"2026-04-16T18:00:57","guid":{"rendered":"https:\/\/m365jp.net\/?p=15977"},"modified":"2026-04-17T03:01:37","modified_gmt":"2026-04-16T18:01:37","slug":"servicerestored-ex1268771-exchange-online-users-may-be-intermittently-unable-to-access-their-exchange-online-mailboxes-in-some-connection-methods","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-17-servicerestored-ex1268771-exchange-online-users-may-be-intermittently-unable-to-access-their-exchange-online-mailboxes-in-some-connection-methods","title":{"rendered":"[serviceRestored] EX1268771 | Exchange Online | Users may be intermittently unable to access their Exchange Online mailboxes in some connection methods."},"content":{"rendered":"
\n
\n
\n\n\n\n
EX1268771 | Exchange Online | Users may be intermittently unable to access their Exchange Online mailboxes in some connection methods.<\/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>\nUsers may have been intermittently unable to access their Exchange Online mailboxes in some connection methods.<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/16\/2026 17:17:30<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/02\/2026 19:14:14<\/td>\n<\/tr>\n
End Time<\/th>\n04\/15\/2026 23:00:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be intermittently unable to access their Exchange Online mailboxes in some connection methods.<\/p>\n

User impact: Users may have been intermittently unable to access their Exchange Online mailboxes in some connection methods.<\/p>\n

More info: This issue may have intermittently impacted some users who attempted to access the Exchange Online service through the Outlook mobile apps or the new Outlook for Mac desktop client.<\/p>\n

Final status: We’ve confirmed that the deployment of the code change has completed saturation, and after a period of monitoring service health telemetry, we’ve observed the errors associated with the impact have ceased and the issue is resolved.<\/p>\n

Scope of impact: This issue intermittently impacted some users attempting to access their Exchange Online mailboxes, with a smaller subset of users persistently unable to access their Exchange Online mailboxes in the Outlook mobile apps or the new Outlook for Mac desktop client.<\/p>\n

Start time: Tuesday, March 17, 2026, at 2:00 PM UTC<\/p>\n

End time: Wednesday, April 15, 2026, at 11:00 PM UTC<\/p>\n

Root cause: A service component that facilitates notification generation and delivery wasn’t processing requests as expected, which resulted in impact.<\/p>\n

Next steps:
– We’re entering an extended period of monitoring to ensure the program we’ve implemented to identify and restart the notification service when persistent errors are detected successfully prevents this issue from reoccurring.<\/p>\n

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

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u306f\u4e00\u90e8\u306e\u63a5\u7d9a\u65b9\u6cd5\u3067\u65ad\u7d9a\u7684\u306bExchange Online\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u4e00\u90e8\u306e\u63a5\u7d9a\u65b9\u6cd5\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u65ad\u7d9a\u7684\u306bExchange Online\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u3053\u306e\u554f\u984c\u306f\u3001Outlook\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3084\u65b0\u3057\u3044Outlook for Mac\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u901a\u3058\u3066Exchange Online\u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u65ad\u7d9a\u7684\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u30b3\u30fc\u30c9\u5909\u66f4\u306e\u5c0e\u5165\u306f\u98fd\u548c\u5b8c\u4e86\u3092\u78ba\u8a8d\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u30d8\u30eb\u30b9\u30c6\u30ec\u30e1\u30c8\u30ea\u306e\u76e3\u8996\u671f\u9593\u3092\u7d4c\u3066\u3001\u5f71\u97ff\u306b\u95a2\u9023\u3059\u308b\u30a8\u30e9\u30fc\u306f\u505c\u6b62\u3057\u3001\u554f\u984c\u306f\u89e3\u6c7a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u3053\u306e\u554f\u984c\u306f\u65ad\u7d9a\u7684\u306b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304cExchange Online\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\u969b\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3057\u3001\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306fOutlook\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3084\u65b0\u3057\u3044Outlook for Mac\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067Exchange Online\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e743\u670817\u65e5\u706b\u66dc\u65e5 \u5348\u5f8c2\u6642 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e744\u670815\u65e5\u6c34\u66dc\u65e5 23:00 UTC<\/p>\n

\u6839\u672c\u539f\u56e0:\u901a\u77e5\u751f\u6210\u3068\u914d\u4fe1\u3092\u4fc3\u9032\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u671f\u5f85\u901a\u308a\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u51e6\u7406\u3092\u884c\u308f\u305a\u3001\u5f71\u97ff\u304c\u751f\u3058\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u6301\u7d9a\u7684\u306a\u30a8\u30e9\u30fc\u304c\u691c\u51fa\u3055\u308c\u305f\u969b\u306b\u901a\u77e5\u30b5\u30fc\u30d3\u30b9\u3092\u691c\u51fa\u3057\u518d\u8d77\u52d5\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3001\u3053\u306e\u554f\u984c\u306e\u518d\u767a\u3092\u9632\u3050\u305f\u3081\u306b\u5b9f\u65bd\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3001\u4eca\u5f8c\u3082\u9577\u671f\u306b\u308f\u305f\u308b\u76e3\u8996\u671f\u9593\u306b\u5165\u308b\u3053\u3068\u306b\u306a\u308a\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":"

EX1268771 | Exchange Online | Users may be intermittently unable to access their Exchange Online mailboxes in […]<\/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-15977","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15977","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=15977"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15977\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}