{"id":15394,"date":"2026-03-17T04:01:10","date_gmt":"2026-03-16T19:01:10","guid":{"rendered":"https:\/\/m365jp.net\/?p=15394"},"modified":"2026-03-17T04:01:46","modified_gmt":"2026-03-16T19:01:46","slug":"servicerestored-ex1253275-exchange-online-some-users-may-experience-issues-when-accessing-their-exchange-online-mailbox-via-one-or-more-connection-method","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-17-servicerestored-ex1253275-exchange-online-some-users-may-experience-issues-when-accessing-their-exchange-online-mailbox-via-one-or-more-connection-method","title":{"rendered":"[serviceRestored] EX1253275 | Exchange Online | Some users may experience issues when accessing their Exchange Online mailbox via one or more connection method"},"content":{"rendered":"
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EX1253275 | Exchange Online | Some users may experience issues when accessing their Exchange Online mailbox via one or more connection method<\/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>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may have experienced errors when accessing their mailbox via multiple Exchange Online connection methods.<\/td>\n<\/tr>\n
Last Updated<\/th>\n03\/16\/2026 18:36:47<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/16\/2026 09:30:00<\/td>\n<\/tr>\n
End Time<\/th>\n03\/16\/2026 13:30:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may have experienced issues when accessing their Exchange Online mailbox via one or more connection method <\/p>\n

User impact: Users may have experienced errors when accessing their mailbox via multiple Exchange Online connection methods.<\/p>\n

More info: Users may have experienced errors or failures when attempting to access their mailbox. Impacted connection methods included, but were not limited to:<\/p>\n

– Outlook on the web
– Outlook desktop
– Exchange ActiveSync
– Other Exchange Online connection protocols<\/p>\n

Final status: We’ve confirmed that service has remained healthy for an extended period of time. Our monitoring indicates the issue is no longer occurring for the affected users. <\/p>\n

Scope of impact: Impact was specific to some users attempting to access their mailbox via any of the connection methods detailed above.<\/p>\n

Start time: Monday, March 16, 2026, at 9:30 AM UTC<\/p>\n

End time: Monday, March 16, 2026, at 1:30 PM UTC<\/p>\n

Preliminary root cause: An underlying issue involving the supporting network infrastructure resulted in a service availability degradation across the Exchange Online connection methods. We’re continuing to investigate to determine the full root cause and will provide more information within the Post-Incident Report.<\/p>\n

Next steps:
– We’re continuing to examine the underlying circumstances that led to this behavior to understand the root cause. <\/p>\n

We’ll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u30011\u3064\u4ee5\u4e0a\u306e\u63a5\u7d9a\u65b9\u6cd5\u3067Exchange Online\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u554f\u984c\u3092\u7d4c\u9a13\u3057\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059 <\/p>\n

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\u8a73\u7d30\u60c5\u5831:\u30e6\u30fc\u30b6\u30fc\u306f\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u6642\u306b\u30a8\u30e9\u30fc\u3084\u5931\u6557\u3092\u7d4c\u9a13\u3057\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5f71\u97ff\u63a5\u7d9a\u65b9\u6cd5\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306b\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093:<\/p>\n

– \u30a6\u30a7\u30d6\u4e0a\u306e\u5c55\u671b
– Outlook\u30c7\u30b9\u30af\u30c8\u30c3\u30d7
– Exchange ActiveSync
– \u305d\u306e\u4ed6\u306eExchange Online\u63a5\u7d9a\u30d7\u30ed\u30c8\u30b3\u30eb<\/p>\n

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\u5f71\u97ff\u306e\u7bc4\u56f2:\u5f71\u97ff\u306f\u3001\u4e0a\u8a18\u306e\u63a5\u7d9a\u65b9\u6cd5\u306e\u3044\u305a\u308c\u304b\u3092\u901a\u3058\u3066\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u7279\u5316\u3057\u305f\u3082\u306e\u3067\u3057\u305f\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e743\u670816\u65e5(\u6708)\u5348\u524d9\u664230\u5206 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e743\u670816\u65e5(\u6708)\u5348\u5f8c1\u664230\u5206(UTC)<\/p>\n

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\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u79c1\u305f\u3061\u306f\u3053\u306e\u884c\u52d5\u306b\u81f3\u3063\u305f\u6839\u672c\u7684\u306a\u72b6\u6cc1\u3092\u5f15\u304d\u7d9a\u304d\u8abf\u67fb\u3057\u3001\u6839\u672c\u539f\u56e0\u3092\u7406\u89e3\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

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EX1253275 | Exchange Online | Some users may experience issues when accessing their Exchange Online mailbox vi […]<\/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-15394","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15394","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=15394"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15394\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}