{"id":13897,"date":"2025-11-20T08:00:54","date_gmt":"2025-11-19T23:00:54","guid":{"rendered":"https:\/\/m365jp.net\/?p=13897"},"modified":"2025-11-20T08:02:53","modified_gmt":"2025-11-19T23:02:53","slug":"servicedegradation-ex1185322-exchange-online-some-users-may-be-unable-to-send-or-receive-email-messages-through-the-ios-mail-app-using-exchange-activesync-eas-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-11-20-servicedegradation-ex1185322-exchange-online-some-users-may-be-unable-to-send-or-receive-email-messages-through-the-ios-mail-app-using-exchange-activesync-eas-2","title":{"rendered":"[serviceDegradation] EX1185322 | Exchange Online | Some users may be unable to send or receive email messages through the iOS Mail app using Exchange ActiveSync (EAS)"},"content":{"rendered":"
\n
\n
\n\n\n\n
EX1185322 | Exchange Online | Some users may be unable to send or receive email messages through the iOS Mail app using Exchange ActiveSync (EAS)<\/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>\nUsers may be unable to send or receive Exchange Online email messages through the native iOS Mail app using EAS.<\/td>\n<\/tr>\n
Last Updated<\/th>\n11\/19\/2025 22:45:23<\/td>\n<\/tr>\n
Start Time<\/th>\n11\/12\/2025 18:50:40<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to send or receive email messages through the iOS Mail app using Exchange ActiveSync (EAS)<\/p>\n

User impact: Users may be unable to send or receive Exchange Online email messages through the native iOS Mail app using EAS.<\/p>\n

More info: The impacted users can authenticate without issue, but they receive the error “Cannot Get Mail. The connection to the server failed.” when trying to refresh email messages in the Mail app.<\/p>\n

Current status: We’ve received feedback from some users that the issue has been remediated by our actions to disable an offending change to the QUIC feature. We’re reaching out to other impacted users to confirm if this solution worked for them as well in order to validate fully that this was the root cause of this issue.<\/p>\n

Scope of impact: Impact may occur for some users, where they can\u2019t send or receive Exchange Online email messages through the native iOS Mail app using EAS.<\/p>\n

Next update by: Thursday, November 20, 2025, at 8:00 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001Exchange ActiveSync(EAS)\u3092\u4f7f\u7528\u3057\u3066iOS\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u3092\u901a\u3058\u3066\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u30e6\u30fc\u30b6\u30fc\u306f\u3001EAS\u3092\u4f7f\u3063\u3066\u30cd\u30a4\u30c6\u30a3\u30d6\u306eiOS\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u3092\u901a\u3058\u3066Exchange Online\u306e\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u53d7\u4fe1\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u554f\u984c\u306a\u304f\u8a8d\u8a3c\u3067\u304d\u307e\u3059\u304c\u3001\u300c\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u308c\u307e\u305b\u3093\u3002\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u3067\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u66f4\u65b0\u3057\u3088\u3046\u3068\u3057\u305f\u969b\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u63a5\u7d9a\u304c\u5931\u6557\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u73fe\u72b6:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u3001QUIC\u6a5f\u80fd\u306e\u554f\u984c\u5909\u66f4\u3092\u7121\u52b9\u5316\u3057\u305f\u3053\u3068\u3067\u554f\u984c\u304c\u89e3\u6c7a\u3055\u308c\u305f\u3068\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u53d7\u3051\u307e\u3057\u305f\u3002\u3053\u306e\u89e3\u6c7a\u7b56\u304c\u554f\u984c\u306e\u6839\u672c\u539f\u56e0\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u5b9f\u306b\u691c\u8a3c\u3059\u308b\u305f\u3081\u3001\u4ed6\u306e\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u9023\u7d61\u3092\u53d6\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001iOS\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u3067EAS\u3092\u4f7f\u3063\u3066Exchange Online\u306e\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u53d7\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2025\u5e7411\u670820\u65e5\u6728\u66dc\u65e5 \u5348\u5f8c8\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

EX1185322 | Exchange Online | Some users may be unable to send or receive email messages through the iOS Mail […]<\/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-13897","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13897","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=13897"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13897\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=13897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=13897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=13897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}