{"id":13096,"date":"2025-10-01T13:01:13","date_gmt":"2025-10-01T04:01:13","guid":{"rendered":"https:\/\/m365jp.net\/?p=13096"},"modified":"2025-10-01T13:15:34","modified_gmt":"2025-10-01T04:15:34","slug":"investigating-ex1162980-exchange-online-users-may-experience-errors-or-failures-when-accessing-their-mailbox-in-one-or-more-exchange-online-connection-methods-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-10-01-investigating-ex1162980-exchange-online-users-may-experience-errors-or-failures-when-accessing-their-mailbox-in-one-or-more-exchange-online-connection-methods-2","title":{"rendered":"[investigating] EX1162980 | Exchange Online | Users may experience errors or failures when accessing their mailbox in one or more Exchange Online connection methods"},"content":{"rendered":"
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EX1162980 | Exchange Online | Users may experience errors or failures when accessing their mailbox in one or more Exchange Online connection methods<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\ninvestigating<\/td>\n<\/tr>\n
Classification<\/th>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may experience errors or failures when accessing their mailbox in one or more Exchange Online connection methods.<\/td>\n<\/tr>\n
Last Updated<\/th>\n10\/01\/2025 03:44:16<\/td>\n<\/tr>\n
Start Time<\/th>\n10\/01\/2025 00:11:02<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may experience errors or failures when accessing their mailbox in one or more Exchange Online connection methods<\/p>\n

User impact: Users may experience errors or failures when accessing their mailbox in one or more Exchange Online connection methods.<\/p>\n

More info: Impact more heavily affects Outlook.com users. <\/p>\n

Current status: We’re continuing to monitor our traffic redistribution out of the affected infrastructure, however this is not resolving the impact as we anticipated. We\u2019re reviewing additional logging to develop alternate mitigation options to address the continual service errors.<\/p>\n

In addition, we’ve confirmed impact is more heavily affecting Outlook.com users rather than our Microsoft 365 Exchange users.<\/p>\n

Scope of impact: Users attempting to access their mailbox in one or more Exchange Online connection methods may be impacted.<\/p>\n

Root cause: A portion of infrastructure responsible for processing request flow traffic that isn’t operating at expected thresholds and this is resulting in impact.<\/p>\n

Next update by: Wednesday, October 1, 2025, at 6:00 AM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb: \u30e6\u30fc\u30b6\u30fc\u304c 1 \u3064\u4ee5\u4e0a\u306e Exchange Online \u63a5\u7d9a\u65b9\u6cd5\u3067\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u304d\u306b\u30a8\u30e9\u30fc\u307e\u305f\u306f\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff: \u30e6\u30fc\u30b6\u30fc\u304c 1 \u3064\u4ee5\u4e0a\u306e Exchange Online \u63a5\u7d9a\u65b9\u6cd5\u3067\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u304d\u306b\u30a8\u30e9\u30fc\u3084\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30: \u5f71\u97ff\u306f Outlook.com \u30e6\u30fc\u30b6\u30fc\u306b\u5927\u304d\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n

\u73fe\u5728\u306e\u30b9\u30c6\u30fc\u30bf\u30b9: \u5f71\u97ff\u3092\u53d7\u3051\u308b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u304b\u3089\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u518d\u5206\u6563\u3092\u5f15\u304d\u7d9a\u304d\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4e88\u60f3\u3069\u304a\u308a\u306b\u5f71\u97ff\u306f\u89e3\u6c7a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u7d99\u7d9a\u7684\u306a\u30b5\u30fc\u30d3\u30b9 \u30a8\u30e9\u30fc\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306e\u4ee3\u66ff\u8efd\u6e1b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u305f\u3081\u306b\u3001\u8ffd\u52a0\u306e\u30ed\u30b0\u8a18\u9332\u3092\u898b\u76f4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3055\u3089\u306b\u3001Microsoft 365 Exchange \u30e6\u30fc\u30b6\u30fc\u3088\u308a\u3082 Outlook.com \u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff\u304c\u5927\u304d\u3044\u3053\u3068\u3082\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u306e\u7bc4\u56f2: 1 \u3064\u4ee5\u4e0a\u306e Exchange Online \u63a5\u7d9a\u65b9\u6cd5\u3067\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6839\u672c\u539f\u56e0: \u8981\u6c42\u30d5\u30ed\u30fc \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u51e6\u7406\u3092\u62c5\u5f53\u3059\u308b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u4e00\u90e8\u304c\u3001\u4e88\u60f3\u3055\u308c\u308b\u3057\u304d\u3044\u5024\u3067\u52d5\u4f5c\u3057\u3066\u304a\u3089\u305a\u3001\u305d\u306e\u7d50\u679c\u3001\u5f71\u97ff\u304c\u751f\u3058\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0\u65e5: 2025 \u5e74 10 \u6708 1 \u65e5\u6c34\u66dc\u65e5\u3001\u5348\u524d 6:00 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

EX1162980 | Exchange Online | Users may experience errors or failures when accessing their mailbox in one or m […]<\/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-13096","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13096","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=13096"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13096\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=13096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=13096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=13096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}